X减20%x-40×1=3乘20%x+40乘以的和怎么算?

2025-12-14 17:05:24
推荐回答(1个)
回答1:

解:X-20%x-40×1=3x20%x+40
x-0.2x-40=60%x+40
x-0.2x-0.6x=40+40
0.2x=80
x=80÷0.2
x=160