3(x+1)+9=3(x+1)+9x

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


Simplifying
3(x + 1) + 9 = 3(x + 1) + 9x

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

Reorder the terms:
3 + 9 + 3x = 3(x + 1) + 9x

Combine like terms: 3 + 9 = 12
12 + 3x = 3(x + 1) + 9x

Reorder the terms:
12 + 3x = 3(1 + x) + 9x
12 + 3x = (1 * 3 + x * 3) + 9x
12 + 3x = (3 + 3x) + 9x

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

Solving
12 + 3x = 3 + 12x

Solving for variable 'x'.

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

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

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

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

Add '-12' to each side of the equation.
12 + -12 + -9x = 3 + -12

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

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

Divide each side by '-9'.
x = 1

Simplifying
x = 1

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