4(x+3)+1=12x-9

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Solution for 4(x+3)+1=12x-9 equation:


Simplifying
4(x + 3) + 1 = 12x + -9

Reorder the terms:
4(3 + x) + 1 = 12x + -9
(3 * 4 + x * 4) + 1 = 12x + -9
(12 + 4x) + 1 = 12x + -9

Reorder the terms:
12 + 1 + 4x = 12x + -9

Combine like terms: 12 + 1 = 13
13 + 4x = 12x + -9

Reorder the terms:
13 + 4x = -9 + 12x

Solving
13 + 4x = -9 + 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.
13 + 4x + -12x = -9 + 12x + -12x

Combine like terms: 4x + -12x = -8x
13 + -8x = -9 + 12x + -12x

Combine like terms: 12x + -12x = 0
13 + -8x = -9 + 0
13 + -8x = -9

Add '-13' to each side of the equation.
13 + -13 + -8x = -9 + -13

Combine like terms: 13 + -13 = 0
0 + -8x = -9 + -13
-8x = -9 + -13

Combine like terms: -9 + -13 = -22
-8x = -22

Divide each side by '-8'.
x = 2.75

Simplifying
x = 2.75

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