Answer:
Using simultaneous Method
x + 2y = 13 ------- eqn 1.
x + y = 5y --------- eqn 2.
x = 13 - 2y --------- eqn 3.
Substitute x into eqn 2
13 - 2y + y = 5y
13 = 5y +2y -y
13 = 6y
6y = 13
Divide both sides by 6
y = 13 /6
Putting y into eqn 3
x = 13 - 2 ( 13/6)
x = 13 - 4.3
X = 8.7
Therefore x = 8.7, y = 13 /6
