Simplify the expression. 2x−6y−[8x−3y−{x−z−(x−2y)−3(x+1)}]
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Step-by-step explanation:
ANSWER:
We have
(i) 3x + 7x = (3 + 7)x = 10x
(ii) -5xy + 9xy = ( -5 + 9)xy = 4xy
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