2/7x=4-2x怎么解
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2/7x=4-2x怎么解
2/7x=4-2x怎么解
2/7x=4-2x怎么解
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2X=28-14X 16X=28 X=4/7
2/7x=4-2x
2/7x+2x=4
(2/7+2)x=4
x=4/(2/7+2)
x=4*7/16
x=1.5
2x/7=4-2x
2x=28-14x
16x=28
x=28/16=7/4