9/13/8+1/8*7/13脱式计算5/8：x=3:16 x+1/4x-4=32 1/4=0.75/x 1.4x- 0.6=7.8

9/13/8+1/8*7/13脱式计算5/8：x=3:16 x+1/4x-4=32 1/4=0.75/x 1.4x- 0.6=7.8
9/13/8+1/8*7/13脱式计算
5/8：x=3:16 x+1/4x-4=32 1/4=0.75/x 1.4x- 0.6=7.8

9/13/8+1/8*7/13脱式计算5/8：x=3:16 x+1/4x-4=32 1/4=0.75/x 1.4x- 0.6=7.8
9/13/8+1/8*7/13
=9/13*1/8+1/8*7/13
=1/8*（9/13+7/13）
=1/8*16/13
=2/13
5/8：x=3:16
3x=5/8x16
3x=10
x=10/3
x+1/4x-4=32
x+x/4=32+4
5x/4=36
x=36x4/5
x=144/5
1/4=0.75/x
x=4x0.75
x=3
1.4x- 0.6=7.8
1.4x=0.6+7.8
1.4x=8.4
x=8.4/1.4
x=6

5\8:x=3:16
3x=5\8×16
3x=10
x=10÷3
x=3\10
x+1/4x-4=32
5\4x=32＋4
5\4x=36
x=36÷5\4
...

全部展开

5\8:x=3:16
3x=5\8×16
3x=10
x=10÷3
x=3\10
x+1/4x-4=32
5\4x=32＋4
5\4x=36
x=36÷5\4
x=28.8
1/4=0.75/x
1x=4×0.75
x=3
1.4x- 0.6=7.8
1.4x=7.8+0.6
1.4x=8.4
x=8.4÷1.4
x=6
唉，晚了一步，早知道不回答了！

收起