Solve the system of the linear equation by adding or subtracting.

7x - y = 9

7x + 2y = 24

First equation by - 1 and add to 2nd equaton

-7x+y=-9

7x+2y=24 +

0x+3y=15

3y=15

divide by 3 both sides

y=5

sub back

7x-y=9

7x-5=9

add 5 both sides

7x=14

divide by 7 both sides

x=2

x=2

y=5

(2,5)