Answer:
x = 10
Explanation: I'm giving you an example of another problem so next time you would know how to do it.
Simplifying
5x + 4x + 90 = 180
Reorder the terms:
90 + 5x + 4x = 180
Combine like terms: 5x + 4x = 9x
90 + 9x = 180
Solving
90 + 9x = 180
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-90' to each side of the equation.
90 + -90 + 9x = 180 + -90
Combine like terms: 90 + -90 = 0
0 + 9x = 180 + -90
9x = 180 + -90
Combine like terms: 180 + -90 = 90
9x = 90
Divide each side by '9'.
x = 10
Simplifying
x = 10
