60×0.8+1.2×(X-60)=0.88X 要过程 速度!!

2025-01-01 10:25:58
推荐回答(2个)
回答1:

60×0.8+1.2×(X-60)=0.88X
48+1.2x-72=0.88x
1.2x-0.88x=72-48
0.32x=24
x=75

回答2:

60×0.8+1.2×(X-60)=0.88X
48+1.2x-72=0.88x
1.2x-0.88x=32
0.32x=32
x=32/0.32
x=100