【简算】 (3/4-2/3)÷1/5 4/5×7/8+7/8÷5 (1-8/15×3/4)÷3/5 (3/8+2/17)×8+1/17
问题描述:
【简算】 (3/4-2/3)÷1/5 4/5×7/8+7/8÷5 (1-8/15×3/4)÷3/5 (3/8+2/17)×8+1/17
答
(3/4-2/3)÷1/5
=1/12ch35
=5/12
4/5×7/8+7/8÷5
=(4/5+1/50×7/8
=1×7/8
=7/8
(1-8/15×3/4)÷3/5
=(1-2/5)×5/3
=3/5×5/3
=1
(3/8+2/17)×8+1/17
=3/8×8+(16/17+1/17)
=3+1
=4