Pre-Algebra Examples

$3 \sqrt{16} - 5$

Step 1

Simplify each term.

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Step 1.1

Rewrite $16$ as $4^{2}$ .

$3 \sqrt{4^{2}} - 5$

Step 1.2

Pull terms out from under the radical, assuming positive real numbers.

$3 \cdot 4 - 5$

Step 1.3

Multiply $3$ by $4$ .

$12 - 5$

Step 2

Subtract $5$ from $12$ .

$7$