
(1.5x-0.2*1.5x)*0.95-x=7求解详细步骤
2个回答
展开全部
(1.5x-0.2×1.5x)×0.95-x=7
(1.5x-0.3x)×0.95-x=7
1.2x×0.95-x=7
(1.2×0.95-1)x=7
(1.14-1)x=7
0.14x=7
x=7÷0.14
x=50
(1.5x-0.3x)×0.95-x=7
1.2x×0.95-x=7
(1.2×0.95-1)x=7
(1.14-1)x=7
0.14x=7
x=7÷0.14
x=50
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