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Mathematics 13 Online
OpenStudy (anonymous):

Combine like terms. 8z + 9 – 7z – 2 a. –56z – 18 c. z + 11 b. z + 7 d. 15z + 11

OpenStudy (raden):

8z - 7z = z and 9 - 2 = 7 now, take a conclusion

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