Answer:
-7 + 4r
Explanation:
You need to combine like terms for this problem. All the basic numbers(without the r) are added together. -14 + 7 = -7. Then the numbers with the r's are added together. -9r + 13r = 4r. This comes out to -7 + 4r
4r-7
-14+7-9r+13r
combine like terms
4r-14+7
hope this helped :)
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