Please help me to slove this
class 7th ncret maths ...
with method
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Answer:
3a-2b-ab-(a-b+ ab) + 3ab + b - a
= 3a-2b-ab-a+b-ab + 3ab + b - a
= 3a-a-a-2b + b + b-ab- ab + 3ab
= a(3-1-1) + b (-2+1+1) + ab (-1-1+3)
= a (3-2) + b (-2+ 2) + ab (3-2)
= a (1) + b (0) + ab (1)
= a + ab
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see the photo for answer
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