Work Step by Step
We simplify by removing the parentheses and then add the like terms as follows: $$ (5y - 7x + 4z) + (3z - 6y + 2x) + (13y + 7z - 6x)\\ =5y - 7x + 4z + 3z - 6y + 2x+ 13y + 7z - 6x\\ =12y-11x+14z .$$
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