D. (5,-21) would be your answer
Answer:
Sorry I don´t know the answer but I tried
Step-by-step explanation:
Answer:

Step-by-step explanation:

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<em> hope it helps..</em>
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Answer:
not complete question pls finish it
Step-by-step explanation:
Answer:
7y + 5z + 10
Step-by-step explanation:
2y + 7z - 2z + 4y + 8 + y + 2
Like terms are terms that have the same variable part.
2y, 4y, y are like terms (remember that y is the same as 1y when you add)
7z, -2z are like terms
8, 2 are like terms
2y + 7z - 2z + 4y + 8 + y + 2 =
= 2y + 4y + y + 7z - 2z + 8 + 2
= 7y + 5z + 10