Answer:
Simplifying
6x + 3y = 54
Solving
6x + 3y = 54
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-3y' to each side of the equation.
6x + 3y + -3y = 54 + -3y
Combine like terms: 3y + -3y = 0
6x + 0 = 54 + -3y
6x = 54 + -3y
Divide each side by '6'.
x = 9 + -0.5y
Simplifying
x = 9 + -0.5y
Explanation: