# Ex 4.2, 2 - Chapter 4 Class 7 Simple Equations

Last updated at July 5, 2018 by Teachoo

Last updated at July 5, 2018 by Teachoo

Transcript

Ex 4.2, 2 Give first the step you will use to separate the variable and then solve the equation: (a) 3l = 423๐ = 42 Dividing 3 both sides 3๐/3 = 42/3 ๐ = 14 Ex 4.2, 2 Give first the step you will use to separate the variable and then solve the equation: (b) ๐/2 = 6๐/2 = 6 Multiplying 2 both sides ๐/2 ร 2 = 6 ร 2 b = 12 Ex 4.2, 2 Give first the step you will use to separate the variable and then solve the equation: (d) 4x = 25 Ex 4.2, 2 Give first the step you will use to separate the variable and then solve the equation: (e) 8y = 36 Dividing 8 both sides 8๐ฆ/8 = 36/8 y = ๐๐/๐ y = 18/4 y = 9/4 Ex 4.2, 2 Give first the step you will use to separate the variable and then solve the equation: (f) ๐ง/3 = 5/4๐ง/3 = 5/4 Multiplying 3 both sides ๐ง/3 ร 3 = 5/4 ร 3 z = ๐๐/๐ Ex 4.2, 2 Give first the step you will use to separate the variable and then solve the equation: (g) ๐/5 = 7/15๐/5 = 7/15 Multiplying 5 both sides ๐/5 ร 5 = 7/15 ร 5 a = ๐/๐Ex 4.2, 2 Give first the step you will use to separate the variable and then solve the equation: (h) 20t = โ 1020t = โ10 Dividing 20 both sides 20๐ก/20 = (โ10)/20 t = (โ๐)/๐

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Davneet Singh

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.