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Basic Math
Arithmetic
Fractions & Decimals
Ratios & Proportions
Percentages
Basic Number Theory
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Integers & Absolute Values
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Quadratic Equations
Polynomials & Factoring
Functions & Graphs
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Trigonometry
Trigonometric Functions
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Graphing 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
$$(-90)-(-97$$
Evaluate
$7$
Solution Steps
The opposite of $-97$ is $97$.
$$-90+97$$
Add $-90$ and $97$ to get $7$.
$$7$$
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Factor
$7$
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