Answer:
x=12
Step-by-step explanation:
Simplifying
5x + -9 = 3x + 15
Reorder the terms:
-9 + 5x = 3x + 15
Reorder the terms:
-9 + 5x = 15 + 3x
Solving
-9 + 5x = 15 + 3x
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-3x' to each side of the equation.
-9 + 5x + -3x = 15 + 3x + -3x
Combine like terms: 5x + -3x = 2x
-9 + 2x = 15 + 3x + -3x
Combine like terms: 3x + -3x = 0
-9 + 2x = 15 + 0
-9 + 2x = 15
Add '9' to each side of the equation.
-9 + 9 + 2x = 15 + 9
Combine like terms: -9 + 9 = 0
0 + 2x = 15 + 9
2x = 15 + 9
Combine like terms: 15 + 9 = 24
2x = 24
Divide each side by '2'.
x = 12
Simplifying
x = 12
