2-(0.1X+0.2)*0.5=X-(0.01X-0.01)*0.02
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2-(0.1X+0.2)*0.5=X-(0.01X-0.01)*0.022-(0.1X+0.2)*0.5=X-(0.01X-0.01)*0.022-(0.1X+0.2)*0.5=X-(0.01X-0.
2-(0.1X+0.2)*0.5=X-(0.01X-0.01)*0.02
2-(0.1X+0.2)*0.5=X-(0.01X-0.01)*0.02
2-(0.1X+0.2)*0.5=X-(0.01X-0.01)*0.02
200-50(0.1x+0.2)=100x-2(0.01x-0.01)
200-5x-10=100x-0.02x+0.02
189.8=105x-0.02x
x=949/524
2-(0.1X+0.2)*0.5=X-(0.01X-0.01)*0.02
2-0.05X-0.1=X-0.0002X+0.0002
X-0.0002X+0.05X=2-0.1-0.0002
1.0498X=1.8998
X=1.8998÷1.0498
X=9499/5249
X=1又5249分之4250
2-(0.1X+0.2)*0.5=X-(0.01X-0.01)*0.02
200-50(0.1x+0.2)=100x-2(0.01x-0.01)
200-5x-10=100x-0.02x+0.02
189.8=105x-0.02x
x=949/524