x/0.2-0.31x-0.13/0.03=1

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x/0.2-0.31x-0.13/0.03=1x/0.2-0.31x-0.13/0.03=1x/0.2-0.31x-0.13/0.03=1x/0.2-0.31x-0.13/0.03=1解；5x-0.3

x/0.2-0.31x-0.13/0.03=1
x/0.2-0.31x-0.13/0.03=1

x/0.2-0.31x-0.13/0.03=1
x/0.2-0.31x-0.13/0.03=1
解；5x-0.31x-13/3=1
15x-0.93x-13=3
1500x-93x-1300=300
1407x=1600
x=1407/1600

x=1407/1600

x/0.2-0.31x-0.13/0.03=1 0.2分之x-0.03分之0.31x-0.13=1 x÷0.2-（0.31x-0.13）÷0.03=1,x等于多少? (X+4)/0.2-(X-3)/0.5=0.2 x-(x-1)/6=3-(x+2)/3 x/12-(2x-1)/20={(3x+4)/8}-1 2%x-5+5%x=20%0.13(x-1)=0.07(x+1) x/2-x/6+x/8-x/10=1-1/3+1/4-1/5 x+0.13x-0.28x=3.4 x x X x x x x x x x x |x| X