如题所述
解：3/5+7/8+2/5等于（ 15/8 ），【即等于1.875】
∵已知需求出3/5+7/8+2/5等于多少
X + Y + Z = X + Z + Y
∴3/5 + 7/8 + 2/5
= 3/5 + 2/5 + 7/8
= 5/5 + 7/8
= 1 + 7/8
= 8/8 + 7/8
= 15/8
= 1.875
答：3/5+7/8+2/5等于15/8，【即等于1.875】
∵已知需求出3/5+7/8+2/5等于多少
X + Y + Z = X + Z + Y
∴3/5 + 7/8 + 2/5
= 3/5 + 2/5 + 7/8
= 5/5 + 7/8
= 1 + 7/8
= 8/8 + 7/8
= 15/8
= 1.875
答：3/5+7/8+2/5等于15/8，【即等于1.875】
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第1个回答 2020-03-09
3/5+7/8+2/5
=3/5+2/5+7/8
=1+7/8
=1又7/8
=3/5+2/5+7/8
=1+7/8
=1又7/8
第2个回答 2020-03-09
3/5+7/8+2/5
=3/5+2/5+7/8
=1+7/8
=1又7/8
=3/5+2/5+7/8
=1+7/8
=1又7/8
