3x+3=15+9

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Solution for 3x+3=15+9 equation: 


Simplifying
3x + 3 = 15 + 9

Reorder the terms:
3 + 3x = 15 + 9

Combine like terms: 15 + 9 = 24
3 + 3x = 24

Solving
3 + 3x = 24

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-3' to each side of the equation.
3 + -3 + 3x = 24 + -3

Combine like terms: 3 + -3 = 0
0 + 3x = 24 + -3
3x = 24 + -3

Combine like terms: 24 + -3 = 21
3x = 21

Divide each side by '3'.
x = 7

Simplifying
x = 7

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