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-2a+1
b) 2a-3b+3a-2b
5a-5b
c) 2y-6y+4x-2x
2x-4y
d)2x+3-6x-10
-4x-7
e) -x+2x+(-6)+x-4
2x-10
f) 2ab-6-ab-(-3)
ab-3
g) 3xx-2yy-6xx-2yy
-3x^2-4y^2
1-2a
b) 2a-3b+3a-2b
5a-5b
c) 2y-6y+4x-2x
-4y+2x
d)2x+3-6x-10
-4x-7
e) -x+2x+(-6)+x-4 = -x+2x-6+x-4
2x-10
f) 2ab-6-ab-(-3) = 2ab-6-ab+3
ab-3
g) 3xx-2yy-6xx-2yy
-3xx-4yy
-3x²-4y²
b) 5a-5b
c) -4y+2x
d) -4x-7
e)-10+2x
f) ab-3
g) -3xx-4yy