3[x+3]=15

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Solution for 3[x+3]=15 equation: 


Simplifying
3[x + 3] = 15

Reorder the terms:
3[3 + x] = 15
[3 * 3 + x * 3] = 15
[9 + 3x] = 15

Solving
9 + 3x = 15

Solving for variable 'x'.

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

Add '-9' to each side of the equation.
9 + -9 + 3x = 15 + -9

Combine like terms: 9 + -9 = 0
0 + 3x = 15 + -9
3x = 15 + -9

Combine like terms: 15 + -9 = 6
3x = 6

Divide each side by '3'.
x = 2

Simplifying
x = 2

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