Give first the step you will use to separate the variable and then solve the equations: (a) 3l =42 (b) b/2=6

(a) 3l = 42
⇒ 3l/3 = 42/3 [Dividing both sides by 3]
⇒ l = 14

(b) b/2 = 6
⇒ b/2 x 2 = 6×2 [Multiplying both sides by 2]
⇒ b = 12

Class 7 Maths Chapter 4 Exercise 4.2

for more answers vist to:
https://www.tiwariacademy.com/ncert-solutions/class-7/maths/chapter-4/