In this chapter, we provide RS Aggarwal Solutions for Class 7 Chapter 7 Linear Equations in One Variable Ex 7C for English medium students, Which will very helpful for every student in their exams. Students can download the latest RS Aggarwal Solutions for Class 7 Chapter 7 Linear Equations in One Variable Ex 7C Maths pdf, free RS Aggarwal Solutions Class 7 Chapter 7 Linear Equations in One Variable Ex 7C Maths book pdf download. Now you will get step by step solution to each question.

Textbook | NCERT |

Class | Class 7 |

Subject | Maths |

Chapter | Chapter 7 |

Chapter Name | Linear Equations in One Variable |

Exercise | 7C |

**RS Aggarwal Solutions for Class 7 Chapter 7 Linear Equations in One Variable Ex 7C Download PDF**

**Question 1.****Solution:**

(d)

**Question 2.****Solution:**

(d)

**Question 3.****Solution:**

(a)

2n + 5 = 3 (3n – 10)

⇒ 2n + 5 = 9n – 30

⇒ 9n – 2n = 5 + 30

⇒ 7n = 35

⇒ n = 5

**Question 4.****Solution:**

(c)

**Question 5.****Solution:**

(c)

8 (2x – 5) – 6 (3x – 7) = 1

⇒ 16x – 40 – 18x + 42 = 1

⇒ -2x + 2 = 1

⇒ -2x = 1 – 2 = -1

x = 12

**Question 6.****Solution:**

(d)

**Question 7.****Solution:**

(a)

**Question 8.****Solution:**

(b)

Let first whole number=x

Then second number = x + 1

and sum = 53

x + x + 1 = 53

⇒ 2x = 53 – 1

⇒ 2x = 52

⇒ x = 26

Smaller number = 26

**Question 9.****Solution:**

Let first even number = 2x

Then second number = 2x + 2

and sum = 86

2x + 2x + 2 – 86

⇒ 4x = 86 – 2 = 84

⇒ x = 21

Larger even number = 2x + 2 = 2 x 21 + 2 = 42 + 2 = 44

**Question 10.****Solution:**

(b)

Let first odd number = 2x + 1

Second number = 2x + 3

2x + 1 + 2x + 3 = 36

⇒ 4x + 4 = 36

⇒ 4x = 36 – 4 = 32

⇒ x = 8

Smaller number = 2x + 1 = 2 x 8 + 1 = 16 + 1 = 17

**Question 11.****Solution:**

(d)

Let number = x

2x + 9 = 31

⇒ 2x = 31 – 9 = 22

⇒ x = 11

**Question 12.****Solution:**

(a)

Let number = x then

3x + 6 = 24

⇒ 3x = 24 – 6 = 18

⇒ x = 6

Number = 6

**Question 13.****Solution:**

(a)

**Question 14.****Solution:**

(b)

Let first angle = x

Then second = 90° – x

x – (90° – x) = 10

⇒ x – 90° + x = 10°

⇒ 2x = 10° + 90° = 100°

x = 50°

Second angle = 90° – 50° = 40°

Larger angle = 50°

**Question 15.****Solution:**

(b)

Let first angle = x

Then second = 180° – x

x – (180° – x) = 20°

⇒ x – 180° + x = 20°

⇒ 2x = 20° + 180° = 200°

x = 100°

Second angle = 180° – 100° = 80°

Smaller angle = 80°

**Question 16.****Solution:**

(c)

Let age of A = 5x

Then age of B = 3x

After 6 years,

A’s age = 5x + 6

and B’s age = 3x + 6

5x+63x+6 = 75

⇒ 25x + 30 = 21x + 42

⇒ 25x – 21x = 42 – 30

⇒ 4x = 12

⇒ x = 3

A’s age = 5x = 5 x 3 = 15 years

**Question 17.****Solution:**

(b)

Let the number = x

According to the condition,

5x = 80 + x

⇒ 5x – x = 80

⇒ 4x = 80

⇒ x = 20

Number = 20

**Question 18.****Solution:**

(c)

Let width of rectangle = x m

Then length = 3x m

Perimeter = 96 m

2 (x + 3x) = 96

⇒ x + 3x = 962 = 48

⇒ 4x = 48

⇒ x = 12

Length = 3x = 12 x 3 = 36 m

**All Chapter RS Aggarwal Solutions For Class 7 Maths**

—————————————————————————–**All Subject NCERT Exemplar Problems Solutions For Class** **7**

**All Subject NCERT Solutions For Class 7**

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