x-3/5x=3 1/5 1/5x+1 1/2=24 3/4x-0.25=2 1/2 4/5xX(1/2+0.4)=4.
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x-3/5x=3 1/5 1/5x+1 1/2=24 3/4x-0.25=2 1/2 4/5xX(1/2+0.4)=4.32 解方程要有过程好的我才给分
x-3/5x=3 1/5
2/5x=16/5
x=16/5÷2/5
x=8
1/5x+1 1/2=24
0.2x=24-1.5
0.2x=22.5
x=22.5÷0.2
x=112.5
3/4x-0.25=2 1/2
3/4x=1.5+0.25=1.75
x=1.75÷3/4
x=2 1/3
4/5xX(1/2+0.4)=4.32
4/5x=4.32÷(1/2+0.4)
4/5x=4.8
x=4.8÷4/5
x=6
2/5x=16/5
x=16/5÷2/5
x=8
1/5x+1 1/2=24
0.2x=24-1.5
0.2x=22.5
x=22.5÷0.2
x=112.5
3/4x-0.25=2 1/2
3/4x=1.5+0.25=1.75
x=1.75÷3/4
x=2 1/3
4/5xX(1/2+0.4)=4.32
4/5x=4.32÷(1/2+0.4)
4/5x=4.8
x=4.8÷4/5
x=6
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