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Basic Math
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Fractions & Decimals
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Percentages
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Integers & Absolute Values
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Example
3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b
Question
$$- 28 - - 7$$
Evaluate
$-21$
Solution Steps
The opposite of $-7$ is $7$.
$$-28+7$$
Add $-28$ and $7$ to get $-21$.
$$-21$$
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Factor
$-21$
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