(150-x)*0.25-10=35求x
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(150-x)*0.25-10=35求x
(150-x)*0.25-10=35
求x
(150-x)*0.25-10=35求x
(150-x)*0.25-10=35
37.5-0.25x-10=35
0.25x=37.5-10-35
0.25x=-7.5
x=-7.5÷0.25
x=-30
-30
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