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