0.8÷(7-5)×7
=0.8÷2×7
=0.4×7
=2.8.
答:甲数是2.8.
若甲数比乙数多0.8,且甲数:乙数=7:5,你能求出甲数是多少吗?
若甲数比乙数多0.8,且甲数:乙数=7:5,你能求出甲数是多少吗?
数学人气:992 ℃时间:2019-12-03 01:24:46
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