21+7x=2(6x-2)

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Solution for 21+7x=2(6x-2) equation:


Simplifying
21 + 7x = 2(6x + -2)

Reorder the terms:
21 + 7x = 2(-2 + 6x)
21 + 7x = (-2 * 2 + 6x * 2)
21 + 7x = (-4 + 12x)

Solving
21 + 7x = -4 + 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.
21 + 7x + -12x = -4 + 12x + -12x

Combine like terms: 7x + -12x = -5x
21 + -5x = -4 + 12x + -12x

Combine like terms: 12x + -12x = 0
21 + -5x = -4 + 0
21 + -5x = -4

Add '-21' to each side of the equation.
21 + -21 + -5x = -4 + -21

Combine like terms: 21 + -21 = 0
0 + -5x = -4 + -21
-5x = -4 + -21

Combine like terms: -4 + -21 = -25
-5x = -25

Divide each side by '-5'.
x = 5

Simplifying
x = 5

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