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NCERT Solutions for Class 8th Mathematics

 

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Chapter 2. Linear Equations in One Variable

Exercise 2.1

 

 

 

Exercise 2.1


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 = 6 - 2 

z = 4 

Solution: 

 5. 6x = 12 

Solution: 

x = 12/6

x = 2 

Solution: 

t = 3 × 10 

t = 30 

 7. 2x + 3 = 18 

Solution: 

2x = 18 - 3 

2x = 15 

x = 15/2

x = 7.5 

Solution: 

 x = 1.6 × 1.5

x =  2.4

9. 7x - 9 = 16 

Solution: 

7x = 16 + 9

7x = 25

x = 25/7

x = 3.5

10. 14x - 8 = 13

Solution: 

14x = 13 + 8

14x = 21

x = 21/14 = 3/2 = 1.5

11. 17 + 6p = 9 

Solution: 

6p = 9 - 17

6p = -8

p = -8/6 = - 1.3

Solution: 

 

 

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