Basic Math Examples

\frac{4}{5} = \frac{225}{a}

$\frac{4}{5} = \frac{225}{a}$

Step 1

Rewrite the equation as

\frac{225}{a} = \frac{4}{5}

$\frac{225}{a} = \frac{4}{5}$ .

\frac{225}{a} = \frac{4}{5}

$\frac{225}{a} = \frac{4}{5}$

Step 2

Multiply the numerator of the first fraction by the denominator of the second fraction. Set this equal to the product of the denominator of the first fraction and the numerator of the second fraction.

225 \cdot 5 = a \cdot 4

$225 \cdot 5 = a \cdot 4$

Step 3

Solve the equation for

a

$a$ .

Tap for more steps...

Step 3.1

Rewrite the equation as

a \cdot 4 = 225 \cdot 5

$a \cdot 4 = 225 \cdot 5$ .

a \cdot 4 = 225 \cdot 5

$a \cdot 4 = 225 \cdot 5$

Step 3.2

Multiply

225

$225$ by

5

$5$ .

a \cdot 4 = 1125

$a \cdot 4 = 1125$

Step 3.3

Divide each term in

a \cdot 4 = 1125

$a \cdot 4 = 1125$ by

4

$4$ and simplify.

Tap for more steps...

Step 3.3.1

Divide each term in

a \cdot 4 = 1125

$a \cdot 4 = 1125$ by

4

$4$ .

\frac{a \cdot 4}{4} = \frac{1125}{4}

$\frac{a \cdot 4}{4} = \frac{1125}{4}$

Step 3.3.2

Simplify the left side.

Tap for more steps...

Step 3.3.2.1

Cancel the common factor of

4

$4$ .

Tap for more steps...

Step 3.3.2.1.1

Cancel the common factor.

$\frac{a \cdot 4}{4} = \frac{1125}{4}$

Step 3.3.2.1.2

Divide

$a$ by

$1$ .

$a = \frac{1125}{4}$

Step 4

The result can be shown in multiple forms.

Exact Form:

$a = \frac{1125}{4}$

Decimal Form:

$a = 281.25$

Mixed Number Form:

$a = 281 \frac{1}{4}$