Question

7.Solve the pair of linear equation:
3x – y = 3
7x + 2y = 20
​

Answer 1

Answer:

answer of your question is

X=2

Y=3

Answer 2

Answer:

3x-y=3__(1)

7x+2y=20__(2)

multiple eq (1)by 2

3x×2-y×2=3×2

6x-2y=6__(3)

adding eq(2)by(3)

7x+2y=20__(2)

+ 6x-2y=6___(3)

13x=26

x=2