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

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


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

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

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

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

Combine like terms: 12 + 9 = 21
21 + -1x + 3x = 9(x + 4)

Combine like terms: -1x + 3x = 2x
21 + 2x = 9(x + 4)

Reorder the terms:
21 + 2x = 9(4 + x)
21 + 2x = (4 * 9 + x * 9)
21 + 2x = (36 + 9x)

Solving
21 + 2x = 36 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
21 + 2x + -9x = 36 + 9x + -9x

Combine like terms: 2x + -9x = -7x
21 + -7x = 36 + 9x + -9x

Combine like terms: 9x + -9x = 0
21 + -7x = 36 + 0
21 + -7x = 36

Add '-21' to each side of the equation.
21 + -21 + -7x = 36 + -21

Combine like terms: 21 + -21 = 0
0 + -7x = 36 + -21
-7x = 36 + -21

Combine like terms: 36 + -21 = 15
-7x = 15

Divide each side by '-7'.
x = -2.142857143

Simplifying
x = -2.142857143

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