设每包大米重X千克
6X-36=84
6X=84+36
X=20
答:每包大米重20千克.
食堂进6包大米,吃了36千克后,还剩84千克.每包大米重多少千克?(列方程并解)
食堂进6包大米,吃了36千克后,还剩84千克.每包大米重多少千克?(列方程并解)
数学人气:676 ℃时间:2019-09-20 06:12:51
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