## Introductory Algebra for College Students (7th Edition)

$-1$
In adding two numbers with the same sign, perform the following steps: (1) Add their absolute values. $|-\frac{7}{8}| + |-\frac{1}{8}| = \frac{7}{8} + \frac{1}{8} = \frac{8}{8}=1$ (2) The sum must have sign common to the addends. $-\frac{7}{8}+(-\frac{1}{8}) = -1$ Thus, the sum is $-1$.
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