
- 5a-(2a-3b)=5a-2a+3b=3a+3b
- 7x-(4x-2y)=7x-4x+2y=3x+2y
- 4y-(y-3)=4y2-3
- 9m+(6n-7m)=9m+6n+7m=6n
- (3a2-5a)-(a2-4a)= 3a2-5a-a2+4a
- 3b+2c
- K
- 2(x+5)
- X
- -4a3b6-(-1a3b6)
- 4-(-2)+12x
- -7a5-(2b+11a4)
- 3x2-13y3+(-2)z2+5
- -1m-2mn+(-1mn)+5xy-8m4
- 12y-4x-5y+3+11yx
- 2a+6b3-2a5+11
- A+(b-(c-d))
- A-(b-(c+d))
- A-((b+c)+d
- A-((b+c)-d)
- 3x-(5x+(2x+3)
- (4n-2)-((n+4+10)
- 12a-((5a+7)-(4-3a)
- 5b-(2c+(3b+8c-4c)