2/3x=5/12
x=5/12÷2/3
x=5/12Ã3/2
x=5/8
5/8÷x=5/32
x=5/8÷5/32
x=5/8Ã32/5
x=4
4/15x=20
x=20÷4/15
x=20Ã15/4
x=75
1/2x+8/9=17/18
1/2x=17/18-8/9
1/2x=1/18
x=1/9
24-1/7x=3
1/7x=21
x=147
2/3x-3/4=7/20
2/3x=11/10
x=11/10÷2/3
x=33/20
x=1.65
3/4÷ï¼3/4ï¼=3/4+ï¼1/4ï¼=2/3Ãï¼3/2ï¼=1
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