Answer:12
Step-by-step explanation:
Simplifying
3x + 15 = 2x + 10 + x + 5
Reorder the terms:
15 + 3x = 2x + 10 + x + 5
Reorder the terms:
15 + 3x = 10 + 5 + 2x + x
Combine like terms: 10 + 5 = 15
15 + 3x = 15 + 2x + x
Combine like terms: 2x + x = 3x
15 + 3x = 15 + 3x
Add '-15' to each side of the equation.
15 + -15 + 3x = 15 + -15 + 3x
Combine like terms: 15 + -15 = 0
0 + 3x = 15 + -15 + 3x
3x = 15 + -15 + 3x
Combine like terms: 15 + -15 = 0
3x = 0 + 3x
3x = 3x
Add '-3x' to each side of the equation.
3x + -3x = 3x + -3x
Combine like terms: 3x + -3x = 0
0 = 3x + -3x
Combine like terms: 3x + -3x = 0
0 = 0
Solving
0 = 0
