#### Answer

-15b

#### Work Step by Step

( -5a - 7b ) + ( 5a - 8b ) = -5a - 7b + 5a - 8b = -5a + 5a -7b - 8b = - 15b

Published by
Pearson

ISBN 10:
0321726391

ISBN 13:
978-0-32172-639-1

-15b

( -5a - 7b ) + ( 5a - 8b ) = -5a - 7b + 5a - 8b = -5a + 5a -7b - 8b = - 15b

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