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Basic Math
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Example
3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b
Question
$$(+9)-(-4)$$
Evaluate
$13$
Solution Steps
The opposite of $-4$ is $4$.
$$9+4$$
Add $9$ and $4$ to get $13$.
$$13$$
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Factor
$13$
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