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Basic Math
Arithmetic
Fractions & Decimals
Ratios & Proportions
Percentages
Basic Number Theory
Pre-Algebra
Integers & Absolute Values
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Polynomials & Factoring
Functions & Graphs
Systems of Equations
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Example
3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b
Question
$$20-(9+4)$$
Evaluate
$7$
Solution Steps
Add $9$ and $4$ to get $13$.
$$20-13$$
Subtract $13$ from $20$ to get $7$.
$$7$$
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Factor
$7$
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