Question

Solve each of the following equations and check your answers:
3 (x + 2) = 15

Answer 1

3 (x + 2) = 15
Dividing both sides by 3, we get
⇒ $$$\frac{\mathrm{3\; (x\; +\; 2)}}{3}=\frac{15}{3}$
⇒ (x + 2) = 5
Subtracting 2 from both sides, we get
⇒ x + 2 $-$ 2 = 5 $-$ 2
⇒ x = 3
Verification:
Substituting x = 3 in LHS, we get
LHS = 3 (x + 2)= 3 (3+2) = 3$\times$5 = 15, and RHS = 15
LHS = RHS
Hence, verified.