2⼀3+8*(7⼀8-5⼀6)=?(简便方法)

2025-05-09 11:23:19
推荐回答(4个)
回答1:

回答2:

=2/3+(8×7/8)-(8×5/6)
=2/3+7-20/3
=7-6
=1

回答3:

2/3+8*(7/8—5/6)
=2/3+8x7/8—8x5/6
=2/3+7—20/3
=2/3+21/3—20/3
=3/3
=1

回答4:

原式=2/3+8*7/8-8*5/6
=2/3+7-20/3
=7-18/3
=7-6
=1