Pre-Algebra Examples

$\frac{4}{5} - \frac{4}{10}$

Step 1

Cancel the common factor of $4$ and $10$ .

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Step 1.1

Factor $2$ out of $4$ .

$\frac{4}{5} - \frac{2 (2)}{10}$

Step 1.2

Cancel the common factors.

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Step 1.2.1

Factor $2$ out of $10$ .

$\frac{4}{5} - \frac{2 \cdot 2}{2 \cdot 5}$

Step 1.2.2

Cancel the common factor.

$\frac{4}{5} - \frac{2 \cdot 2}{2 \cdot 5}$

Step 1.2.3

Rewrite the expression.

$\frac{4}{5} - \frac{2}{5}$

Step 2

Combine the numerators over the common denominator.

$\frac{4 - 2}{5}$

Step 3

Subtract $2$ from $4$ .

$\frac{2}{5}$

Step 4

The result can be shown in multiple forms.

Exact Form:

$\frac{2}{5}$

Decimal Form:

$0.4$