How do you compute $-77+(-46)$ ?

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Answer 1 · 2018-03-02T06:11:20

-123

$+(-$ is equivalent to $-$ , so

$-77+(-46)$ is the same as $-77-46$
a negative minus a negative can be seen like addition; $77+46$ which $=123$

now move just the negative sign in front giving us

$-123$

as the answer

How do you compute -77+(-46)-77+(-46)?