Answer:
(7, 6)
Step-by-step explanation:
x = 2y-5
2x + y = 20
we can write x = 2y-5 as 2y-x=5 and 2x + y = 20 as y + 2x=20
2y-x=5
y+2x=20
we multiply 2y-x=5 by 2(elimination method)
4y-2x=10
y+2x=20
(4y+y) + (2x-2x) = 20+10
5y + 0 = 30
5y = 30
y = 6
y+2x=20
6 + 2x = 20
2x= 20-6
2x =14
x= 7
