Question

2 х -  4y + 2 z =-12

y + 3х= 1 + 2 z

3 y - 9 = х + 2z

Answer 1

х=-12*2*4*2+(2+4+2)

х=-12*2*4*2+8

х=-24*4*2+8

х=-48*4+8

х=-192+8

х=-184