Behaviour being used: Adaptive mode
Minimum fraction: 0
Question summary: Resol el sistema d'equacions següent: [Error converting from MathML to accessible text.] x1=_____ y1=_____ x2=_____ y2=_____
Right answer summary: part 1: -4; part 2: 2; part 3: -4; part 4: 2
Question state: todo