Basic Math Examples

$\frac{3}{z} + \frac{y}{z^{2}}$

Step 1

To write $\frac{3}{z}$ as a fraction with a common denominator, multiply by $\frac{z}{z}$ .

$\frac{3}{z} \cdot \frac{z}{z} + \frac{y}{z^{2}}$

Step 2

Write each expression with a common denominator of $z^{2}$ , by multiplying each by an appropriate factor of $1$ .

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Step 2.1

Multiply $\frac{3}{z}$ by $\frac{z}{z}$ .

$\frac{3 z}{z \cdot z} + \frac{y}{z^{2}}$

Step 2.2

Multiply $z$ by $z$ .

$\frac{3 z}{z^{2}} + \frac{y}{z^{2}}$

Step 3

Combine the numerators over the common denominator.

$\frac{3 z + y}{z^{2}}$