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Basic Math
Arithmetic
Fractions & Decimals
Ratios & Proportions
Percentages
Basic Number Theory
Pre-Algebra
Integers & Absolute Values
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Quadratic Equations
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
$$-12-(-3)=$$
Evaluate
$-9$
Solution Steps
The opposite of $-3$ is $3$.
$$-12+3$$
Add $-12$ and $3$ to get $-9$.
$$-9$$
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Factor
$-9$
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