7⼀8×13⼀9+13⼀9÷8的简便运算?

2025-05-20 00:26:18
推荐回答(1个)
回答1:

原式=7/8 x13/9 +13/9 x1/8
=91/72 +13/72
=104/72
=13/9
=1又9分之4