#### Answer

-2m

#### Work Step by Step

7m and -9m are like terms, so we add their coefficients (7 + (-9) = -2) to get -2m.

Published by
Pearson

ISBN 10:
0-32184-874-8

ISBN 13:
978-0-32184-874-1

-2m

7m and -9m are like terms, so we add their coefficients (7 + (-9) = -2) to get -2m.

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