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b=4x-3y+3
c=6x-4
d=3-1x+8y
e=-8-5x+4y
f=-2+4x
x + y - 3 + 2x - x - 2 =
x + 2x - x + y - 3 - 2 =
3x - x + y - 5
2x + y - 5
b) (2x-3y+4)+(2x-1)=
2x - 3y + 4 + 2x - 1
2x + 2x - 3y + 4 - 1
4x - 3y + 3
c) (5x+6)+(-3x+2)+(x-9)=
5x + 6 - 3x + 2 + x - 9
5x + x - 3x + 6 + 2 - 9
6x - 3x + 8 - 9
3x - 1
d) (3x+2y-4)+(6y-4x+1)=
3x + 2y - 4 + 6y - 4x + 1
3x - 4x + 2y + 6y - 4 + 1
- x + 8y - 3
e) (x+y-7)+(3y-4x-1)=
x + y - 7 + 3y - 4x - 1
x - 4x + y + 3y - 7 - 1
- 3x + 4y - 8
(3x-2y+1)+(2x+5y-6)+(3-x-3y)=
3x - 2y + 1 + 2x + 5y - 6 + 3 - x - 3y
3x + 2x - x + 5y - 2y - 3y + 1 - 6 + 3
5x - x + 5y - 5y + 4 - 6
4x - 2