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Basic Math
Arithmetic
Fractions & Decimals
Ratios & Proportions
Percentages
Basic Number Theory
Pre-Algebra
Integers & Absolute Values
Factors & Multiples
Prime Factorization
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Polynomials & Factoring
Functions & Graphs
Systems of Equations
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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
$$13-(-4)$$
Evaluate
$17$
Solution Steps
The opposite of $-4$ is $4$.
$$13+4$$
Add $13$ and $4$ to get $17$.
$$17$$
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Factor
$17$
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