Basic Math Examples

$9 - 4 \frac{7}{8}$

Step 1

Convert

$4 \frac{7}{8}$ to an improper fraction.

Tap for more steps...

Step 1.1

A mixed number is an addition of its whole and fractional parts.

$9 - (4 + \frac{7}{8})$

Step 1.2

Add

$4$ and

$\frac{7}{8}$ .

Tap for more steps...

Step 1.2.1

To write

$4$ as a fraction with a common denominator, multiply by

$\frac{8}{8}$ .

$9 - (4 \cdot \frac{8}{8} + \frac{7}{8})$

Step 1.2.2

Combine

$4$ and

$\frac{8}{8}$ .

$9 - (\frac{4 \cdot 8}{8} + \frac{7}{8})$

Step 1.2.3

Combine the numerators over the common denominator.

$9 - \frac{4 \cdot 8 + 7}{8}$

Step 1.2.4

Simplify the numerator.

Tap for more steps...

Step 1.2.4.1

Multiply

$4$ by

$8$ .

$9 - \frac{32 + 7}{8}$

Step 1.2.4.2

Add

$32$ and

$7$ .

$9 - \frac{39}{8}$

Step 2

To write

$9$ as a fraction with a common denominator, multiply by

$\frac{8}{8}$ .

$9 \cdot \frac{8}{8} - \frac{39}{8}$

Step 3

Combine

$9$ and

$\frac{8}{8}$ .

$\frac{9 \cdot 8}{8} - \frac{39}{8}$

Step 4

Combine the numerators over the common denominator.

$\frac{9 \cdot 8 - 39}{8}$

Step 5

Simplify the numerator.

Tap for more steps...

Step 5.1

Multiply

$9$ by

$8$ .

$\frac{72 - 39}{8}$

Step 5.2

Subtract

$39$ from

$72$ .

$\frac{33}{8}$

Step 6

The result can be shown in multiple forms.

Exact Form:

$\frac{33}{8}$

Decimal Form:

$4.125$

Mixed Number Form:

$4 \frac{1}{8}$