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RBSE Solutions for Class 8 Maths Chapter 11 Linear Equations with One Variable In Text Exercise

March 21, 2019 by Fazal Leave a Comment

RBSE Solutions for Class 8 Maths Chapter 11 Linear Equations with One Variable In Text Exercise is part of RBSE Solutions for Class 8 Maths. Here we have given Rajasthan Board RBSE Class 8 Maths Chapter 11 Linear Equations with One Variable In Text Exercise.

Board RBSE
Textbook SIERT, Rajasthan
Class Class 8
Subject Maths
Chapter Chapter 11
Chapter Name Linear Equations with One Variable
Exercise In Text Exercise
Number of Questions 3
Category RBSE Solutions

Rajasthan Board RBSE Class 8 Maths Chapter 11 Linear Equations with One Variable In Text Exercise

Page No: 125

Question
Let us practice to solve an equation : Equation 3x + 9 = 15 solution x = 2

On both sides New equation Solution
1. Adding 2 3x + 11 = 17 x = 2
2. Subtracting 3 3x + 6 = 12 x = …
3. Multiplying by 2 6x + 18 = … x = …
4. Dividing by 3 … = 5 x = …

Solution:

On both sides New equation Solution
1. Adding 2 3x + 11 = 17 x = 2
2. Subtracting 3 3x + 6 = 12 x = 2
3. Multiplying by 2 6x + 18 = 30 x = 2
4. Dividing by 3 x + 3 = 5 x = 2

Page No: 128

RBSE Solutions

Question 2.
Solve the following equations
1. \(\frac { 2x }{ x+6 }=1\)
2. 10 = x + 3
3. 16 = 7x – 9
4. \(\frac { x+5 }{ x }\) = \(2\frac { 2 }{ 3 }\)
Solution:
1. \(\frac { 2x }{ x+6 }=1\)
By cross(RBSESolutions.com)multiplication
2x = x + 6
⇒ 2x – x = 6 | On transposing x
⇒ x = 6

2. 10 = x + 3
⇒ 10 – 3 = x | On transposing 3
⇒ 7 = x
⇒ x = 7

3. 16 = 7x – 9
⇒ 16 + 9 = 7x | On transposing – 9
⇒ 25 = 7x
⇒ 7x = 25
⇒ \(\frac { 7x }{ 7 } =\frac { 25 }{ 7 } \)
On dividing by 7 on both sides
\(x=\frac { 25 }{ 7 }\)

4. \(\frac { x+5 }{ x }\) = \(2\frac { 2 }{ 3 }\)
\(\frac { x+5 }{ x }\) = \(\frac { 2 }{ 3 }\)
By cross(RBSESolutions.com)multiplication
⇒ 3(x + 5) = 8x
⇒ 3x + 15 = 8x
⇒ 3x – 8x = – 15
On transposing 8x and 15
⇒ – 5x = – 15
⇒ \(\frac { -5x }{ -5 } =\frac { -15 }{ -5 } \) | On dividing by – 5 on both sides
x = 3

Page No: 129

RBSE Solutions

Question 3.
Lets revise to make mathematical sentence, if there is any number x then fill in the blanks.
5 more than(RBSESolutions.com)the number = x + 5
3 less than the number = __
Half of the number = __
7 less half of the number = ___
4 more than one third of the number = ___
6 more(RBSESolutions.com)than triple of the number = ___
3 less than 5 times of the number = ___
Solution
5 more than the number = x + 5
3 less than the number = x – 3
Half of the number = \(\frac { 1 }{ 2 }x\)
1 less half of the number = \(\frac { 1 }{ 2 }x-7\)
4 more than one third of the number = \(\frac { 1 }{ 3 }x+4\)
6 more than(RBSESolutions.com)triple of the number = 3x + 6
3 less than 5 times of the number = 5x – 3

RBSE Solutions

We hope the given RBSE Solutions for Class 8 Maths Chapter 11 Linear Equations with One Variable In Text Exercise will help you. If you have any query regarding Rajasthan Board RBSE Class 8 Maths Chapter 11 Linear Equations with One Variable In Text Exercise, drop a comment below and we will get back to you at the earliest.

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