5⼀2+括号9⼀8-3⼀2脱式计算?

2025-02-24 15:51:06
推荐回答(4个)
回答1:

5/2+(9/8-3/2)
=5/2+(9/8−12/8)
=5/2−3/8
=20/8−3/8
=17/8

回答2:

5/2+(9/8-3/2)
=5/2+9/8-3/2
=5/2-3/2+9/8
=1+9/8
=17/8

回答3:

5/2+(9/8-3/2)
=40/8+9/8-12/8
=49/8-12/8
=37/8

回答4: