Basic Math Examples

$\frac{7}{8} - \frac{1}{4} = b$

Step 1

Rewrite the equation as $b = \frac{7}{8} - \frac{1}{4}$ .

$b = \frac{7}{8} - \frac{1}{4}$

Step 2

Simplify $\frac{7}{8} - \frac{1}{4}$ .

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Step 2.1

To write $- \frac{1}{4}$ as a fraction with a common denominator, multiply by $\frac{2}{2}$ .

$b = \frac{7}{8} - \frac{1}{4} \cdot \frac{2}{2}$

Step 2.2

Write each expression with a common denominator of $8$ , by multiplying each by an appropriate factor of $1$ .

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Step 2.2.1

Multiply $\frac{1}{4}$ by $\frac{2}{2}$ .

$b = \frac{7}{8} - \frac{2}{4 \cdot 2}$

Step 2.2.2

Multiply $4$ by $2$ .

$b = \frac{7}{8} - \frac{2}{8}$

Step 2.3

Combine the numerators over the common denominator.

$b = \frac{7 - 2}{8}$

Step 2.4

Subtract $2$ from $7$ .

$b = \frac{5}{8}$

Step 3

The result can be shown in multiple forms.

Exact Form:

$b = \frac{5}{8}$

Decimal Form:

$b = 0.625$