Answer:
Simplifying
5x + y = 120
Solving
5x + y = 120
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-1y' to each side of the equation.
5x + y + -1y = 120 + -1y
Combine like terms: y + -1y = 0
5x + 0 = 120 + -1y
5x = 120 + -1y
Divide each side by '5'.
x = 24 + -0.2y
Simplifying
x = 24 + -0.2y
Explanation: