# Ex 4.2, 1 - Chapter 4 Class 7 Simple Equations

Last updated at July 2, 2018 by Teachoo

Last updated at July 2, 2018 by Teachoo

Transcript

Ex 4.2, 1Give first the step you will use to separate the variable and then solve the equation: (a) x 1 = 0x 1 = 0 Adding 1 to both sides x 1 + 1 = 0 + 1 x = 1 Ex 4.2, 1Give first the step you will use to separate the variable and then solve the equation(b) x + 1 = 0x + 1 = 0 Subtracting 1 from both sides x + 1 1 = 0 1 x = 1 Ex 4.2, 1Give first the step you will use to separate the variable and then solve the equation: (c) x 1 = 5x 1 = 5 Adding 1 to both sides x 1 + 1 = 5 + 1 x = 6 Ex 4.2, 1Give first the step you will use to separate the variable and then solve the equation:(d) x + 6 = 2x + 6 = 2 Subtracting 6 from both sides x + 6 6 = 2 6 x = 4 Ex 4.2, 1Give first the step you will use to separate the variable and then solve the equation: (e) y 4 = 7y 4 = 7 Adding 4 to both sides y 4 + 4 = 7 + 4 y = 3 Ex 4.2, 1Give first the step you will use to separate the variable and then solve the equation: (f) y 4 = 4 y 4 = 4 Adding 4 to both sides y 4 + 4 = 4 + 4 y = 8 Ex 4.2, 1Give first the step you will use to separate the variable and then solve the equation:(g) y + 4 = 4 y + 4 = 4 Subtracting 4 from both sides y + 4 4 = 4 4 y = 0 Ex 4.2, 1Give first the step you will use to separate the variable and then solve the equation:(h) y + 4 = 4 y + 4 = 4 Subtracting 4 from both sides y + 4 4 = 4 4 y + 0 = (4 + 4) y = 8

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Davneet Singh

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 8 years. He provides courses for Maths and Science at Teachoo. You can check his NCERT Solutions from Class 6 to 12.