1.5X+20=1X(50-X)怎么算?

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1.5X+20=1X(50-X)怎么算?1.5X+20=1X(50-X)怎么算?1.5X+20=1X(50-X)怎么算?1.5X+20=1X(50-X)1,5x+20=50-x1.5x+2=50-20

1.5X+20=1X(50-X)怎么算?
1.5X+20=1X(50-X)怎么算?

1.5X+20=1X(50-X)怎么算?
1.5X+20=1X(50-X)
1,5x+20=50-x
1.5x+2=50-20
2.5x=30
x=12