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Basic Math
Arithmetic
Fractions & Decimals
Ratios & Proportions
Percentages
Basic Number Theory
Pre-Algebra
Integers & Absolute Values
Factors & Multiples
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Polynomials & Factoring
Functions & Graphs
Systems of Equations
Trigonometry
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
$$-18-(-5+8)$$
Evaluate
$-21$
Solution Steps
Add $-5$ and $8$ to get $3$.
$$-18-3$$
Subtract $3$ from $-18$ to get $-21$.
$$-21$$
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Factor
$-21$
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