Question

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how can you isolate the variable p?
4(p + 5) = 21
4p + 20 = 21

• 20 - 20 subtract 20 on both sides.

4p = 1 ? ? on both sides.

Explanation:

Step1: Isolate $4p$

We already have $4p = 1$ after subtracting 20 from both sides.

Step2: Solve for $p$

Divide both sides by 4 to isolate $p$.
$\frac{4p}{4}=\frac{1}{4}$

Step3: Simplify to find $p$

$p=\frac{1}{4}$

Answer:

Divide by 4 on both sides; $p=\frac{1}{4}$