Pre-Algebra Examples

$a = \frac{1}{2} \cdot (b + c - d)$

Step 1

Apply the distributive property.

$a = \frac{1}{2} b + \frac{1}{2} c + \frac{1}{2} (- d)$

Step 2

Simplify.

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Step 2.1

Combine $\frac{1}{2}$ and $b$ .

$a = \frac{b}{2} + \frac{1}{2} c + \frac{1}{2} (- d)$

Step 2.2

Combine $\frac{1}{2}$ and $c$ .

$a = \frac{b}{2} + \frac{c}{2} + \frac{1}{2} (- d)$

Step 2.3

Combine $\frac{1}{2}$ and $d$ .

$a = \frac{b}{2} + \frac{c}{2} - \frac{d}{2}$