the answer is 7b over 9b because the rule is numbers now letters later
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-7a-7b
2a + 3 - 9b - a - 7 Bring like terms together: = 2a - a - 9b + 3 - 7 Combine like terms: = a - 9b - 4
9b + 6 - 8 = -36 9b = -38 b = 4.2222222(repeating)
The simplified expression is -9a -9b.
(12a+9b)(12a-9b)