第1个回答 2017-09-26
括号7/8-1/4+2/5括号乘以40等于41
(7/8-1/4+2/5)*40
=7/8*40-1/4*40+2/5*40
=35-10+16
=25+16
=41本回答被网友采纳
第2个回答 2017-09-26
(7/8-1/4+2/5)*40
=7/8*40-1/4*40+2/5*40
=35-10+16
=41
第3个回答 2017-09-26
(7/8-1/4+2/5)x40
=7/8x40-1/4x40+2/5x40
=35-10+16
=51-10
=41
第4个回答 2017-09-26
41