Solve each of the following equations : 4x = 4.9 = 6.5
4x + 4.9 = 6.5
⇒ 4x + 4.9 – 4.9 = 6.5 – 4.9
⇒ 4x = 1.6 (Subtracting 4.9 from both sides)
⇒ 4x /4 = 1.6/4 (Dividing by 4)
⇒ x = 0.4
∴ x = 0.4