## Thinking Mathematically (6th Edition)

$\frac{x}{5}$ = 3 Step 1: Multiply both the sides by 5 $\frac{x}{5}$ x 5 = 3x5 Step 2: Simplify x= 15 Now we check the proposed solution, 15, by replacing x with 15 in the original equation. Step 1: the original equation $\frac{x}{5}$ = 3 Step2: Substitute 15 for x $\frac{15}{5}$ = 3 Step 3: Solve $\frac{15}{5}$ =3 3=3 Since the check results in true statement, we conclude that the solution set of the given equation is {15}.