NCERT Solutions for Class 7 Maths Chapter 4 Simple Equations Ex 4.1
Question 1.
Give first the step you will use to separate the variable and then solve the equation:
(a) x – 1 = 0 (b) x + 1 = 0 (c) x – 1 = 5 (d) x + 6 = 2
(e) y – 4 = – 7 (f) y – 4 = 4 (g) y + 4 = 4 (h) y + 4 = – 4
Question 2.
Give first the step you will use to separate the variable and then solve the equation:
(a) 3l = 42 (b) b/2=6 (c)p/7= 4 (d) 4x = 25
(e) 8y = 36 (f) z/3=5/4 (g) a/5=7/15 (h) 20t = – 10
Question 3.
Give the steps you will use to separate the variable and then solve the equation:
(a) 3n – 2 = 46 (b) 5m + 7 = 17 (c)20p/3= 40 (d) 3p/10=6
Question 4.
Solve the following equations:
(a) 10p = 100 (b) 10p + 10 = 100 (c)p/4= 5 (d)p/3= 5
(e)3p/4 = 6 (f) 3s = –9 (g) 3s + 12 = 0 (h) 3s = 0
(i) 2q = 6 (j) 2q – 6 = 0 (k) 2q + 6 = 0 (l) 2q + 6 = 12
