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Verified answer
(10x-5y-67)+(-5x+2y+4z)10x-5x-5y+2y+4z+67
5x-3y+4z+67
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Verified answer
10x - 5y - 67 +(-5x + 2y + 4z)= 10x - 5y - 67 - 5x + 2y + 4z
= 5x - 3y + 4z - 67
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