Pre-Algebra Examples

$\frac{22 - 2}{7 - 2}$

Step 1

To convert from slope to percent grade, multiply the slope by a hundred.

$\frac{22 - 2}{7 - 2} = \frac{22 - 2}{7 - 2} \cdot 100$

Step 2

Simplify by subtracting numbers.

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Step 2.1

Subtract $2$ from $22$ .

$\frac{20}{7 - 2} \cdot 100 %$

Step 2.2

Subtract $2$ from $7$ .

$\frac{20}{5} \cdot 100 %$

Step 3

Cancel the common factor of $5$ .

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Step 3.1

Factor $5$ out of $100$ .

$\frac{20}{5} \cdot 5 (20) %$

Step 3.2

Cancel the common factor.

$\frac{20}{5} \cdot 5 \cdot 20 %$

Step 3.3

Rewrite the expression.

$20 \cdot 20 %$

Step 4

Multiply $20$ by $20$ .

$400 %$