add:6x + 4y – z +3; 2y -3 z + 4; 11y – 7x + 2z
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Answer:
-x + 17y - 2z + 7
Step-by-step explanation:
6x + 4y – z +3+ 2y -3 z + 4+ 11y – 7x + 2z
-x + 17y - 2z + 7
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