Question

解方程，X-1/3X=3/4，3/4X-1/2=1，2/3-3/4X=1/6？

3/4X÷5/8=9/10，8/9×+1/15=4/5？

Answer 1

第一个：2x/3=3/4, x=9/8
第二个：3x/4=3/2, x=2
第三个：3x/4=1/2, x=2/3

Answer 2

X-1/3X=3/4
2/3x=3/4
x=3/4÷2/3
x=9/8，
3/4X-1/2=1
3/4x=1+1/2
x=3/2÷3/4
x=2
2/3-3/4X=1/6
3/4x=2/3-1/6
x=1/2÷3/4
x=2/3
3/4X÷5/8=9/10
6/5x=9/10
x=9/10÷6/5
x=3/4
8/9×+1/15=4/5
8/9x=4/5-1/15
x=11/15÷8/9
x=33/40

Answer 3

X一1/3X二2/3

Answer 4

X-1/3X=3/4，
2/3X=3/4
X=3/4÷2/3
X=9/8
3/4X-1/2=1
3/4X=1+1/2
3/4X=3/2
X=3/2÷3/4
X=2
2/3-3/4X=1/6
3/4X=2/3-1/6
3/4X=1/2
X=1/2÷3/4
X=2/3
3/4X÷5/8=9/10
3/4X=9/10×5/8
3/4X=9/16
X=9/16÷3/4
X=3/4
8/9×+1/15=4/5
8/9X=4/5-1/15
8/9X=11/15
X=11/15÷8/9
X=33/40