12x+21=5x

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Solution for 12x+21=5x equation:


Simplifying
12x + 21 = 5x

Reorder the terms:
21 + 12x = 5x

Solving
21 + 12x = 5x

Solving for variable 'x'.

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

Add '-5x' to each side of the equation.
21 + 12x + -5x = 5x + -5x

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

Combine like terms: 5x + -5x = 0
21 + 7x = 0

Add '-21' to each side of the equation.
21 + -21 + 7x = 0 + -21

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

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

Divide each side by '7'.
x = -3

Simplifying
x = -3

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