[3(x+1)+9]=15

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Solution for [3(x+1)+9]=15 equation:


Simplifying
[3(x + 1) + 9] = 15

Reorder the terms:
[3(1 + x) + 9] = 15
[(1 * 3 + x * 3) + 9] = 15
[(3 + 3x) + 9] = 15

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

Combine like terms: 3 + 9 = 12
[12 + 3x] = 15

Remove brackets around [12 + 3x]
12 + 3x = 15

Solving
12 + 3x = 15

Solving for variable 'x'.

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

Add '-12' to each side of the equation.
12 + -12 + 3x = 15 + -12

Combine like terms: 12 + -12 = 0
0 + 3x = 15 + -12
3x = 15 + -12

Combine like terms: 15 + -12 = 3
3x = 3

Divide each side by '3'.
x = 1

Simplifying
x = 1

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