0.8x+1.2(x+1.8)=35,96 решите уравнение
0.8x+1.2x+2.16=35.96
2x=35.96-2.16
2x=33.8
x=16.9
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0.8x+1.2x+2.16=35.96
2x=35.96-2.16
2x=33.8
x=16.9