Question

find the solution of the following pair of linear equation 3 X - 7 Y = 5 and X + Y = 15​

Answer 1

Answer:

Step-by-step explanation:

3x - 7y = 5           (1)

x + y = 15

Multiplying by 3,

3x + 3y = 45

Subtracting from (1)

3x - 7y - 3x - 3y = 5 - 45

10y = 40

y = 4

x = 11

Answer 2

Answer:

Step-by-step explanation:

x+y=15. *7

7x +7y=105

3x-7y=5

10x=110

X=11

11+y=15

y=4

X==11