1⼀17×5⼀7+5⼀17×6⼀7简便方法?

2025-04-06 08:31:02
推荐回答(2个)
回答1:

利用乘法分配率计算
=5/17×(1/7+6/7)
=5/17×1
=5/17

回答2:

1/17×5/7+5/17×6/7
=(1×5)/
(17×7)
+(5×6)/(17×7)
=1/119×(5+30)
=35/119
=5/17