1+(2/5)x=6/5x-(1/2)x=12

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1+(2/5)x=6/5x-(1/2)x=121+(2/5)x=6/5x-(1/2)x=121+(2/5)x=6/5x-(1/2)x=121+(2/5)x=6/5(2/5)x=6/5-1(2/5)x=

1+(2/5)x=6/5x-(1/2)x=12
1+(2/5)x=6/5
x-(1/2)x=12

1+(2/5)x=6/5x-(1/2)x=12
1+(2/5)x=6/5
(2/5)x=6/5-1
(2/5)x=1/5
x=1/2
x-(1/2)x=12
(1/2)x=12
x=12/(1/2)
x=24

1+(2/5)x=6/5 2/5x=1/5 x=1/2
x-(1/2)x=12 1/2x=12 x=24

1、x=1/2
2、x=24

1+(2/5)x=6/5
(2/5)x=1/5
x=1/2
x-(1/2)x=12
x=24

1/2,24

1+0.4x=1.2 x-0.5x=12
0.4x=1.2-1 0.5x=12
0.4x=0.2 x=12除以0.5
x=0.2除以0.4 x=24
x=0.5

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