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

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


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

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

Combine like terms: 3x + 3x = 6x
12 + 6x = 3 + -1(x + 9)

Reorder the terms:
12 + 6x = 3 + -1(9 + x)
12 + 6x = 3 + (9 * -1 + x * -1)
12 + 6x = 3 + (-9 + -1x)

Combine like terms: 3 + -9 = -6
12 + 6x = -6 + -1x

Solving
12 + 6x = -6 + -1x

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
12 + 6x + x = -6 + -1x + x

Combine like terms: 6x + x = 7x
12 + 7x = -6 + -1x + x

Combine like terms: -1x + x = 0
12 + 7x = -6 + 0
12 + 7x = -6

Add '-12' to each side of the equation.
12 + -12 + 7x = -6 + -12

Combine like terms: 12 + -12 = 0
0 + 7x = -6 + -12
7x = -6 + -12

Combine like terms: -6 + -12 = -18
7x = -18

Divide each side by '7'.
x = -2.571428571

Simplifying
x = -2.571428571

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