12x+21=(4x+6)

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Solution for 12x+21=(4x+6) equation:


Simplifying
12x + 21 = (4x + 6)

Reorder the terms:
21 + 12x = (4x + 6)

Reorder the terms:
21 + 12x = (6 + 4x)

Remove parenthesis around (6 + 4x)
21 + 12x = 6 + 4x

Solving
21 + 12x = 6 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
21 + 12x + -4x = 6 + 4x + -4x

Combine like terms: 12x + -4x = 8x
21 + 8x = 6 + 4x + -4x

Combine like terms: 4x + -4x = 0
21 + 8x = 6 + 0
21 + 8x = 6

Add '-21' to each side of the equation.
21 + -21 + 8x = 6 + -21

Combine like terms: 21 + -21 = 0
0 + 8x = 6 + -21
8x = 6 + -21

Combine like terms: 6 + -21 = -15
8x = -15

Divide each side by '8'.
x = -1.875

Simplifying
x = -1.875

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