#a·x-#b·x-#c·x+#d·x={#1}
-#a·x-(#e·x)+(#f·x)-(#g·x)={#2}
- #a·x+#b·x+(-#c·x)-(-#d·x)={#3}
#a·x+(#g·x)-(-#c·x)-(#e·x)={#4}
#a·x+(#e·x)-(-#d·x)-(#f·x)={#5}
]]>#a·x-#b·x-#c·x+#d·x={:SHORTANSWER:=\#r}
-#a·x-(#e·x)+(#f·x)-(#g·x)={:SHORTANSWER:=\#p}
- #a·x+#b·x+(-#c·x)-(-#d·x)={:SHORTANSWER:=\#s}
#a·x+(#g·x)-(-#c·x)-(#e·x)={:SHORTANSWER:=\#t}
#a·x+(#e·x)-(-#d·x)-(#f·x)={:SHORTANSWER:=\#u}
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