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x/3+2*20=2x+5怎么解方程 “x/3+2*20=2x+5怎么解方程”
人气:251 ℃ 时间:2020-05-29 14:53:38
解答
x/3+40=2x+5
40-5=(2-1/3)x
35=5x/3
x=21
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