Question

(10-3x)÷2=8算到28的过程?

Answer 1

BI来，点击看详细3X + Y + 2Z = 28①点击看详细5X-3Y + Z = 7②点击看详细①-② * 2，是点击看详细-7X + 7Y = 14，点击看详细7Y = 14 + 7X点击看详细Y = 2 + X
登录到到网Y = 2 + X到②，太点击看详细5X-6-3x + 2 = 7，点击看详细2X + Z = 13

Z = 13-2x，点击看详细的Y = 2 + X，Z = 13-2x替代X + Y + Z，也

X + 2 + X + 13-2x = 15

中国最好的，我可以给它主要是用来表示XY和z

Answer 2

(10-3x)÷ 2=8
10-3x=8×2
10-3x=16
3x=10-16
3X=-6
X=-6/3
X=-2