Question

simplify the equation and explain the strategy.
5a = 2a + 15
5a - 2a = 2a - 2a + 15
3a = 15
using the subtraction property of equality eliminates the 2a on the right side and results in an equivalent equation.

Explanation:

Step1: Subtract 2a from both sides

$5a - 2a=2a - 2a + 15$

Step2: Simplify both sides

$3a = 15$

Step3: Divide both sides by 3

$\frac{3a}{3}=\frac{15}{3}$

Answer:

$a = 5$