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Basic Math
Arithmetic
Fractions & Decimals
Ratios & Proportions
Percentages
Basic Number Theory
Pre-Algebra
Integers & Absolute Values
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Trigonometric Functions
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Example
3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b
Question
$$8--5$$
Evaluate
$13$
Solution Steps
The opposite of $-5$ is $5$.
$$8+5$$
Add $8$ and $5$ to get $13$.
$$13$$
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Factor
$13$
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