2x+21=12x-49

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Solution for 2x+21=12x-49 equation:


Simplifying
2x + 21 = 12x + -49

Reorder the terms:
21 + 2x = 12x + -49

Reorder the terms:
21 + 2x = -49 + 12x

Solving
21 + 2x = -49 + 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 + 2x + -12x = -49 + 12x + -12x

Combine like terms: 2x + -12x = -10x
21 + -10x = -49 + 12x + -12x

Combine like terms: 12x + -12x = 0
21 + -10x = -49 + 0
21 + -10x = -49

Add '-21' to each side of the equation.
21 + -21 + -10x = -49 + -21

Combine like terms: 21 + -21 = 0
0 + -10x = -49 + -21
-10x = -49 + -21

Combine like terms: -49 + -21 = -70
-10x = -70

Divide each side by '-10'.
x = 7

Simplifying
x = 7

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