Question

x1 + x2 + x3 + x4 + x5 = 7 4x1 + 2x2 + 3x3 + 2x4 - 2x5 = 5 x

Answer 1

化简是正确的

x3 = c1,x4 =c2,x5 = c3

代入计算x1,x2用 c1,c2,c3表示

就得到了通解

{-(9/2),23/2,0,0,0}