35(X-2)+15(5X-6)=(22X-51)+21(3X-4)
35X-70+75X-90=22X-51+63X-84
35X+75X-22X-63X=-51-84+70+90
25X=25
X=1确定?确定
35(X-2)+15(5X-6)=(22X-51)+21(3X-4)
35(X-2)+15(5X-6)=(22X-51)+21(3X-4)
数学人气:445 ℃时间:2019-12-17 05:29:48
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