小学解方程问题

3/5x+3/4=4.77
3/5x=4.77-0.75
0.6x=4.02
x=6.7

12-6x=12/5
6x=12-12/5
6x=12-2.4
6x=9.6
x=1.6

2又1/2x-8=17
2.5x=17+8
2.5x=25
x=10

4/5-5/8x=3/4
5/8x=4/5-3/4
0.625x=0.8-0.75
0.625x=0.05
x=0.08

1.0.6x+0.75=4.77
0.6x=4.77-0.75
x=4.02/0.6
x=6.7

2. 12-6x=2.4
9.6=6x
x=1.6

3.2.5x-8=17
2.5x=25
x=10

4.0.8-0.625x=0.75
0.05=0.625x
x=0.08

1. 3/5x+3/4=4.77
解：3/5x+3/4=477/100
3/5x=477/100-3/4
3/5x=402/100
x=402/100*5/3
x=6.7

2. 解：6x=12-12/5
6x=48/5
x=84/5÷6
x=8/5

4. 解5/8x=4/5-3/4
5/8x=1/20
x=1/20*8/5
x=2/25

3/5x+3/4=4.77
x=6.7
12-6x=12/5
x=1.6
2又1/2x-8=17
x=11
4/5-5/8x=3/