Question

Substitute 2x+y=36
x-y=9

Answer 1

x=15 y=6

Explanation:

2x+y=36 eq 1

x-y=9 ep 2

x=9+y ep3

2x+y=36

2(9+y) +y=36

18+3y=36

3y=36-18

3y=18

y=6

x=9+y

x=9+6

x=15

Answer 2

Solution in da attachment!! :)