3[x+4]=9

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Solution for 3[x+4]=9 equation: 


Simplifying
3[x + 4] = 9

Reorder the terms:
3[4 + x] = 9
[4 * 3 + x * 3] = 9
[12 + 3x] = 9

Solving
12 + 3x = 9

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 = 9 + -12

Combine like terms: 12 + -12 = 0
0 + 3x = 9 + -12
3x = 9 + -12

Combine like terms: 9 + -12 = -3
3x = -3

Divide each side by '3'.
x = -1

Simplifying
x = -1

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