Question 622870
2x + y = 36

Subtract 1y from each side of the equation.

2x + y - 1y = 36 - 1y

Combine like terms:

y - 1y = 0

2x = 36 - 1y

Divide each side by 2

2x/2 = 36/2 - 1y/2

x = 18 - 1y/2 or

x = 18 - 0.5y