Ncert Solutions For Class 8 Maths Ex 2.4

Ncert Solutions For Class 8 Maths Chapter 2 Ex 2.4

Question 1:

solve x-3=6

Answer :

x-3=6

Transporting 3 to the right hand side(R.H.S)  We get

X=6+3=9

 

Question 2:

solve : y+4=9

Answer:

Transporting 4 to R.H.S we obtain

Y=9-4=5

 

Question 3:

solve : 7=z+3

Answer:

Bring 3 to L.H.S ,we obtain

7-3=z

Z=4

 

Question 4:

Solve :  38+x=196

Answer:

38+x=196

Bring 38  to the R.H.S ,we obtain

X= 19638

X= 238

 

Question 5:

Solve 3x=6

Answer :

3x=6

Dividing both side by 3,we get

3x3=63

x=2

 

Question 6:

Solve : t2=5

Answer :

t2=5

Multiplying both side by 2 ,we get

t22=52

T=10

 

Question 7:

Solve :

2x5=16

Multiply both sides by 52 ,we obtain

522x5=1652

X=40

 

Question 8:

Solve : 1.4= y1.2

Solutions:

y1.2

Multiply both side by 1.2 ,we obtain

1.4*1.2= y1.21.2

Y=1.68

 

Question 9:

Solve: 5x-3=15

Bring 3 to R.H.S , we obtain

5x=15+3

5x=18

Dividing both sides by 5 ,we get

5x5=125

X=  125

 

Question 10:

solve 12y-6=7

Answer

12y-6=7

Bring 6 to RHS ,We get

12y=7+6

12y=13

Divide both side by 12

12y12=1312

Y= 1312

 

Question 11:

Solve 13+5x=9

Answer : 13+5x=9

Tranposing 13 to RHS We get

5x=9-13

5x= -4

Divide 5 by both side we obtain

5x5=45

X =45

 

Question 12:

Solve: x4+1=615

Answer:

x4+1=615

Changing 1 to the RHS , we get

x4=6151 x4=61515 x4=915

Multiply either side by 4 we get

x44=9415

X=125