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NCERT Class 8th Mathematics Chapter 2 – Linear Equations in One Variable Solutions Exercise 2.1 Solutions
Exercise 2.1
Q1.x-2=7
Sol: x-2=7
[Adding 2 both sides]
x-2+2=7+2
x=9
Q2.y+3=10
Sol:y+3=10
[Subtracting 3from both sides]
y+3-3=10-3
y=7
Q3.6=z+2
Sol:6=z+2
[Subtracting 2 from both sides]
6-2=z+2-2
z=4
Sol:
[Subtracting 3/7 from both sides]
X=2
Q5.6x=12
Sol:6x=12
[Dividing both sides by 6]
x=2
Sol:
[Multiplying both sides by 5]
t=50
Sol:
[Multiplying both sides by 3 ]
2x=54
[Dividing both sides by 2]
x=27
Sol:
[Multiplying both sides by 1.5]
y=2.40
Q9.7x-9=16
Sol:7x-9=16
[Adding 9 both sides]
7x-9+9=16+9
7x=25
[Dividing both sides by 7]
Q10.14y-8=13
Sol:14y-8=13
[Adding 8 both sides]
14y-8+8=13+8
14y=21
[Dividing both sides by 14]
Q11.17+6p=9
Sol:17+6p=9
[Subtracting 17from both sides]
17+6p-17=9-17
6p=-8
[Dividing both sidesby 6]
Sol:
[Subtracting 1 from both sides]
[Multiplying both sides by 3]
Chapter 2-Linear Equations in One Variable Solutions Exercise 2.2 Solutions