(7x +2y - 3z) + (3x - 4y +8z)
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10x- 2y
Step-by-step explanation:
- (7x + 2y - 3z ) + (3x - 4y + 8z )
- 7x + 2y - 3z + 3x - 4y + 8z
- 10x - 2y
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