Question

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12-4a+5b-7-(-5a)-4b-5
5a-2ax+2ax-ax-4a
-(3x+3)- ( (5x-5)+(4x-4))
4xy-2xy+3xy+1 xy+8yx-12yx
4

Answer 1

12-4a+5b-7-(-5a)-4b-5= 5-4a+5b+5a-4b-5=a+b

5a-2ax+2ax-ax-4a= -ax+a

-(3x+3)- ( (5x-5)+(4x-4))=-3x-3-(5x-5+4x-4)= -3x-3-9x+9=-12x+6

4xy-2xy+3xy+1 xy+8yx-12yx= 6xy -4yx

Answer 2

1.a+b
2.a-ax
3. 3x-3-(5x+5+4x+4)= 3x-3-5x-5-4x-4=--12x+6
4. 6xy - 4yx

Answer 3

12-4a+5b-7-(-5a)-4b-5 = 12-7-5 -4a+5a + 5b-4b = a+b
5a-2ax+2ax-ax-4a = 5a-4a -2ax+2ax-ax = a-ax
-(3x+3)- ( (5x-5)+(4x-4)) = -3x-3 - (5x-5+4x-4) = -3x-3-5x+5-4x+4 =
= -3x-5x-4x -3+5+4 = -12x +6
4xy-2xy+3xy+1 xy+8yx-12yx = 6xy - 4yx