[(1+50%)x+(1+40%)*(360-x) - 知识问答

[(1+50%)x+(1+40%)*(360-x)]*80%-360=56求x

1个回答

[(1+50%)x+(1+40%)*(360-x)]*80%-360=56
[1.5x+1.4*(360-x)]*0.8=416
(1.5x+504-1.4x)*0.8=416
0.1x+504=520
0.1x=16
x=160

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