NCERT Solutions Class 8th Maths Chapter – 2 Linear Equations in One Variable Exercise 2.1

1. x – 2 = 7

Solution:
x – 2 = 7
x = 7 + 2
x = 9

2. y + 3 = 10

Solution:
y + 3 = 10
y = 10 – 3
y = 7

3. 6 = z + 2

Solution:
6 = z + 2
z + 2 = 6
z = 6 – 2
z = 4

4. 3/7 + x = 17/7

Solution:
3/7 + x = 17/7
x = 17/7 – 3/7
x = 14/7
x = 2

5. 6x = 12

Solution:
6x = 12
x = 12/6
x = 2

6. t/5 = 10

Solution:
t/5 = 10
t = 10 × 5
t = 50

7. 2x/3 = 18

Solution:
2x/3 = 18
2x = 18 × 3
2x = 54
x = 54/2
x = 27

8. 1.6 = y/15

Solution:
1.6 = y/1.5
y/1.5 = 1.6
y = 1.6 × 1.5
y = 2.4

9. 7x – 9 = 16

Solution:
7x – 9 = 16
7x = 16 + 9
7x = 25
x = 25/7

10. 14y – 8 = 13

Solution:
14y – 8 = 13
14y = 13 + 8
14y = 21
y = 21/14
y = 3/2

11. 17 + 6p = 9

Solution:
17 + 6p = 9
6p = 9 – 17
6p = – 8
p = -8/6
p = -4/3

12. x/3 + 1 = 7/15

Solution:
x/3 + 1 = 7/15
x/3 = 7/15 – 1
x/3 = (7 -15)/15
x/3 = -8/15
x = -8/15 × 3
x = -8/5