Skip to main content
Editing a short answer - math & science question by WIRIS
You have permission to :
Edit this question
General
Category
Default for System (16649)
Test-Lidia
Question name
Question text
<p><span style="color: #003300; font-size: small;"><span style="font-weight: bold;"><span style="color: #003300;">Resol: </span> </span></span><span class="nolink">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mfrac mathcolor=¨#003300¨»«mrow»«mo mathvariant=¨bold¨»#«/mo»«mi mathvariant=¨bold¨»a«/mi»«mo mathvariant=¨bold¨»§#160;«/mo»«mi mathvariant=¨bold¨»x«/mi»«mo mathvariant=¨bold¨»-«/mo»«mo mathvariant=¨bold¨»#«/mo»«mi mathvariant=¨bold¨»b«/mi»«/mrow»«mrow»«mo mathvariant=¨bold¨»#«/mo»«mi mathvariant=¨bold¨»m«/mi»«/mrow»«/mfrac»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»-«/mo»«mfrac mathcolor=¨#003300¨»«mrow»«mo mathvariant=¨bold¨»#«/mo»«mi mathvariant=¨bold¨»c«/mi»«mo mathvariant=¨bold¨»§#160;«/mo»«mi mathvariant=¨bold¨»x«/mi»«mo mathvariant=¨bold¨»+«/mo»«mo mathvariant=¨bold¨»#«/mo»«mi mathvariant=¨bold¨»d«/mi»«/mrow»«mrow»«mo mathvariant=¨bold¨»#«/mo»«mi mathvariant=¨bold¨»n«/mi»«/mrow»«/mfrac»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»=«/mo»«mfrac mathcolor=¨#003300¨»«mrow»«mo mathvariant=¨bold¨»#«/mo»«mi mathvariant=¨bold¨»e«/mi»«mo mathvariant=¨bold¨»§#160;«/mo»«mi mathvariant=¨bold¨»x«/mi»«mo mathvariant=¨bold¨»+«/mo»«mo mathvariant=¨bold¨»#«/mo»«mi mathvariant=¨bold¨»f«/mi»«/mrow»«mrow»«mo mathvariant=¨bold¨»#«/mo»«mi mathvariant=¨bold¨»o«/mi»«/mrow»«/mfrac»«mo mathvariant=¨bold¨ mathcolor=¨#003300¨»-«/mo»«mfrac mathcolor=¨#003300¨»«mrow»«mo mathvariant=¨bold¨»#«/mo»«mi mathvariant=¨bold¨»g«/mi»«mo mathvariant=¨bold¨»§#160;«/mo»«mi mathvariant=¨bold¨»x«/mi»«mo mathvariant=¨bold¨»-«/mo»«mo mathvariant=¨bold¨»#«/mo»«mi mathvariant=¨bold¨»h«/mi»«/mrow»«mrow»«mo mathvariant=¨bold¨»#«/mo»«mi mathvariant=¨bold¨»p«/mi»«/mrow»«/mfrac»«/mstyle»«/math»</span></p> <p><br /><span style="font-weight: bold; color: #ff6600;">Format de la resposta:</span> x=-3/2 <br /><br /></p> <div style="text-align: center; color: #ff3300;"><span style="font-size: large;"><span style="font-weight: bold;">Atenció: el denominador comú és el mcm!</span></span></div>
Default mark
General feedback
No, case is unimportant
Yes, case must match
Correct answers
You must provide at least one possible answer. The first matching answer will be used to determine the score and feedback. Click the icon next to the answer field to edit the mathematical properties of the answer and the question.
Answer 1
Answer
Grade
None
100%
90%
83.33333%
80%
75%
70%
66.66667%
60%
50%
40%
33.33333%
30%
25%
20%
16.66667%
14.28571%
12.5%
11.11111%
10%
5%
Feedback
Answer 2
Answer
Grade
None
100%
90%
83.33333%
80%
75%
70%
66.66667%
60%
50%
40%
33.33333%
30%
25%
20%
16.66667%
14.28571%
12.5%
11.11111%
10%
5%
Feedback
Settings for multiple tries
Penalty for each incorrect try
100%
50%
33.33333%
25%
20%
10%
0%
Hint 1
Hint text
<p><strong><span style="color: #008000;">Cal treure els denominadors calculant el mcm com en qualsevol suma de fraccions. </span><br /><span style="color: #008000;">El denominador comú és #m_c.</span><br /><span style="color: #008000;">Després es treu el denominador, i queda:</span><br /><span style="color: #008000;">#m_1(#a x - #b) - #m_2 (#c x + #d) = #m_3 (#e x + #f) - #m_4(#g x - #h)</span><span style="color: #0000ff;"><br /><br /></span></strong></p>
Hint 2
Hint text
<p><span style="color: #0000ff;" data-mce-mark="1"><strong>Treu els parèntesis en dues fases per evitar errors.</strong></span></p> <p><span style="color: #0000ff;" data-mce-mark="1"><strong><strong><span data-mce-mark="1">#m_1(#a x - #b) - #m_2 (#c x + #d) = #m_3 (#e x + #f) - #m_4(#g x - #h)</span></strong></strong></span></p> <p><span style="color: #0000ff;" data-mce-mark="1"><strong>Primer, multiplica pel nombre que tenen al davant sense emprar el signe d'aquest nombre:</strong></span></p> <p><span style="color: #0000ff;" data-mce-mark="1"><strong><span data-mce-mark="1">(#n1 x - #n2) - (#n3 x + #n4) = (#n5 x + #n6) - (#n7 x - #n8)</span></strong></span></p> <p><span style="color: #0000ff;" data-mce-mark="1"><strong><span data-mce-mark="1">Després treu els parèntesis canviant TOTS els signes dels que tenen un signe "-" al davant.</span></strong></span></p> <p><span style="color: #0000ff;" data-mce-mark="1"><strong><strong>#n1 x - #n2 - #n3 x - #n4 = #n5 x + #n6 - #n7 x + #n8</strong></strong></span></p> <p><span style="color: #0000ff;"><strong><strong>Només cal agrupar i resoldre.</strong></strong></span></p>
Created / last saved
Created
by
Admin User
on
Thursday, 23 August 2018, 11:08 AM
Last saved
by
Admin User
on
Thursday, 23 August 2018, 11:08 AM
There are required fields in this form marked
.