解方程. 1/2+x=5/6 x-7/10=1/5 x+1/4=1/2.
解方程.
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数学人气:692 ℃时间:2019-10-11 02:21:22
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根据题意可得:(1)12+x=56, 12+x-12=56-12, x=13;(2)x-710=15, x-710+710=15+710, x=910;(3)x...
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