(500-x)*1.5-13.5x=705怎么解(过程)

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(500-x)*1.5-13.5x=705怎么解(过程)(500-x)*1.5-13.5x=705怎么解(过程)(500-x)*1.5-13.5x=705怎么解(过程)(500-x)*1.5-13.5

(500-x)*1.5-13.5x=705怎么解(过程)
(500-x)*1.5-13.5x=705怎么解(过程)

(500-x)*1.5-13.5x=705怎么解(过程)
(500-x)*1.5-13.5x=705
750-1.5x-13.5x=705
15x=45
x=3