12x-42+3x=6(3x-9)

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Solution for 12x-42+3x=6(3x-9) equation:


Simplifying
12x + -42 + 3x = 6(3x + -9)

Reorder the terms:
-42 + 12x + 3x = 6(3x + -9)

Combine like terms: 12x + 3x = 15x
-42 + 15x = 6(3x + -9)

Reorder the terms:
-42 + 15x = 6(-9 + 3x)
-42 + 15x = (-9 * 6 + 3x * 6)
-42 + 15x = (-54 + 18x)

Solving
-42 + 15x = -54 + 18x

Solving for variable 'x'.

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

Add '-18x' to each side of the equation.
-42 + 15x + -18x = -54 + 18x + -18x

Combine like terms: 15x + -18x = -3x
-42 + -3x = -54 + 18x + -18x

Combine like terms: 18x + -18x = 0
-42 + -3x = -54 + 0
-42 + -3x = -54

Add '42' to each side of the equation.
-42 + 42 + -3x = -54 + 42

Combine like terms: -42 + 42 = 0
0 + -3x = -54 + 42
-3x = -54 + 42

Combine like terms: -54 + 42 = -12
-3x = -12

Divide each side by '-3'.
x = 4

Simplifying
x = 4

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