im having trouble with the following topic i just cant understand what im meant to do.
2x1 + x2 + 2x3 = 4
-2x1 + 2x2 - x3 = 2
-1x + 3x2 + 2x3 = 6
Ive uploaded the question from my revision as jpeg image
if you could help me i need to understand how to complete the question for my exam in two weeks just brain dead when it comes to this topic.
thanks again guys