1.75×7分之6+14分之3×4分之7+4分之7=? (8分之5-4分之1)÷(9分之8+3分之1)=?

2024-12-16 03:07:46
推荐回答(1个)
回答1:

1.75×7分之6+14分之3×4分之7+4分之7
= 7/8 x 6/7 +3/14 x 7/4 + 7/4
=3 /4 +(3/14 + 1 )x 7/4
=3 /4 +17/14 x 7/4
=3 /4 +17/14 x 7/4
=(42+ 119) /56
= 56分之161

(8分之5-4分之1)÷(9分之8+3分之1)
=( 5/8 - 2/8 )÷ (8/9 +3/9)
= 3/ 8 x 9/11
= 27/ 88
88分之27