Class 8 | NCERT Solution Math Chapter 2 | Linear Equations in One Variable | Exercise 2.1

 

Exercise 2.1 Page: 23

Solve the following equations.

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 = and / 1.5

and / 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

Maths Class 8 NCERT Solutions Chapter 1 Exercises
Exercise 2.1 Solutions 12 Questions (12 Short Answer Questions)
Exercise 2.2 Solutions 16 Questions (6 Long Answer Questions, 10 Short Answer Questions)
Exercise 2.3 Solutions 10 Questions (3 Long Answer Questions, 7 Short Answer Questions)
Exercise 2.4 Solutions 10 Questions (4 Long Answer Questions, 6 Short Answer Questions)
Exercise 2.5 Solutions 10 Questions (1 Long Answer Questions, 9 Short Answer Questions)
Exercise 2.6 Solutions 7 Questions (1 Long Answer Questions, 6 Short Answer Questions)