- RD Chapter 3- Pair of Linear Equations in Two Variables Ex-3.1
- RD Chapter 3- Pair of Linear Equations in Two Variables Ex-3.2
- RD Chapter 3- Pair of Linear Equations in Two Variables Ex-3.4
- RD Chapter 3- Pair of Linear Equations in Two Variables Ex-3.5
- RD Chapter 3- Pair of Linear Equations in Two Variables Ex-3.6
- RD Chapter 3- Pair of Linear Equations in Two Variables Ex-3.7
- RD Chapter 3- Pair of Linear Equations in Two Variables Ex-3.8
- RD Chapter 3- Pair of Linear Equations in Two Variables Ex-3.9
- RD Chapter 3- Pair of Linear Equations in Two Variables Ex-3.10
- RD Chapter 3- Pair of Linear Equations in Two Variables Ex-3.11
- RD Chapter 3- Pair of Linear Equations in Two Variables Ex-VSAQS

RD Chapter 3- Pair of Linear Equations in Two Variables Ex-3.1 |
RD Chapter 3- Pair of Linear Equations in Two Variables Ex-3.2 |
RD Chapter 3- Pair of Linear Equations in Two Variables Ex-3.4 |
RD Chapter 3- Pair of Linear Equations in Two Variables Ex-3.5 |
RD Chapter 3- Pair of Linear Equations in Two Variables Ex-3.6 |
RD Chapter 3- Pair of Linear Equations in Two Variables Ex-3.7 |
RD Chapter 3- Pair of Linear Equations in Two Variables Ex-3.8 |
RD Chapter 3- Pair of Linear Equations in Two Variables Ex-3.9 |
RD Chapter 3- Pair of Linear Equations in Two Variables Ex-3.10 |
RD Chapter 3- Pair of Linear Equations in Two Variables Ex-3.11 |
RD Chapter 3- Pair of Linear Equations in Two Variables Ex-VSAQS |

Solve the following systems of equations:

11x + 15y + 23 = 0

7x – 2y – 20 = 0

**Answer
1** :

11x + 15y + 23 = 0=> 11x + 15y = -23 ……..(i)

7x – 2y – 20 = 0 => 7x – 2y = 20 ……….(ii)

Multiply (i) by 2 and (ii) 15, we get

22x + 30y = -46

105x – 30y = 300

Adding we get

127x = 254 => x = 254/127 =2

7 x 2 – 2y = 20 => 14 – 2y = 20

-2y = 20 – 14 = 6

y = -3

3x – 7y + 10 = 0

y – 2x – 3 = 0

**Answer
2** :

0.4x + 0.3y = 1.7

0.7x – 0.2y = 0.8

**Answer
3** :

**Answer
4** :

7(y + 3) – 2(x + 2) = 14

4(y – 2) + 3(x – 3) = 2

**Answer
5** :

**Answer
6** :

**Answer
7** :

4/x + 3y = 8

6/x – 4y = -5

**Answer
8** :

x + y/2 = 4

x/3 + 2y = 5

**Answer
9** :

x + 2y = 3/2

2x + y = 3/2

**Answer
10** :

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