How to I simplify this to a single fraction?

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I don't know how to fully simplify this and get rid of the seven at the end. If anyone could help I would greatly appreciate it.

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$$ \frac{7a+7b}{8a}-\frac{9a+3b}{2a}+7 = \frac{7a+7b}{8a}-\frac{36a+12b}{8a}+\frac{56a}{8a}=\frac{7a+7b-(36a+12b)+56a}{8a} = \frac{7a+7b-36a-12b+56a}{8a}= \frac{27a-5b}{8a}$$