(0.1X-0.02)/0.01-(X+1)/0.5=3

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(0.1X-0.02)/0.01-(X+1)/0.5=3
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(0.1X-0.02)/0.01-(X+1)/0.5=3
(0.1X-0.02)/0.01-(X+1)/0.5=3

(0.1X-0.02)/0.01-(X+1)/0.5=3
(0.1X-0.02)/0.01-(X+1)/0.5=3
10x-2-2x-2=3
8x=7
x=7/8

X=3/8

x=7÷8

(0.1X-0.02)/0.01-(X+1)/0.5=3
10x-0.2-2x-2=3
8x=3+2+0.2
8x=5.2
x=0.65