3(x—7)+5(+8)=15 解方程
3(x—7)+5(+8)=15 解方程
数学人气:265 ℃时间:2020-04-05 19:24:50
优质解答
=-4/3 .过程3x-21+40=153x=15+21-40,3x=-4,x=-4/3
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