Question

九又十一分之七减去括号二又八分之五加上四又十一分之七要最简便的

Answer 1

九又十一分之七-(二又八分之五+四又十一分之七)?
=9+7/11-(2+5/8+4+7/11)
=9+7/11-2-5/8-4-7/11
=(9-2-4)+(7/11-7/11)-5/8
=3+0-5/8
=2+8/8-5/8
=2+3/8
=2又8分3