去括号(1)9-(3x+2)= (2)2(x+2)-1=. (3) 4x-3(1-x)

2025-06-22 03:50:06
推荐回答(2个)
回答1:

1、 9-3x-2
2、 2x+4
3、 4x-3+3x
=7x-3

希望采纳

回答2:

9 - (3x + 2)
= 9 - 3x - 2
= 7 - 3x

2(x + 2) - 1
= 2x + 4 - 1
= 2x + 3

4x - 3(1 - x)
= 4x - 3 + 3x
= 7x - 3