列式计算
3又7/8-(4/5+ 2又1/8)×12.5
=3又7/8-（0.8+19/8）x12.5
=3又7/8-0.8x12.5-19/8x12.5
=3又7/8-10-19/8x25/2
=-6又1/8-475/16
=-6又1/16-29又11/16
=-35又3/4
3又7/8-(4/5+ 2又1/8)×12.5
=3又7/8-（0.8+19/8）x12.5
=3又7/8-0.8x12.5-19/8x12.5
=3又7/8-10-19/8x25/2
=-6又1/8-475/16
=-6又1/16-29又11/16
=-35又3/4
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第1个回答 2020-04-06
31/8-(4/5+17/8)×12.5
=31/8- 17/10 x 25/2
= 31/8 -85/4
=31/8 -170/8
= - 139/8本回答被网友采纳
=31/8- 17/10 x 25/2
= 31/8 -85/4
=31/8 -170/8
= - 139/8本回答被网友采纳
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