Solve for x in x + 2y = 65
x = 65 - 2y
Substitute x = 65 - 2y into 2x + 3y = 105
130 - y = 105
Solve for y in 130 - y = 105
y = 25
Substitute y = 25 into x = 65 - 2y
x = 15
Therefore;
