21+4x=-51+12x

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Solution for 21+4x=-51+12x equation:


Simplifying
21 + 4x = -51 + 12x

Solving
21 + 4x = -51 + 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 + 4x + -12x = -51 + 12x + -12x

Combine like terms: 4x + -12x = -8x
21 + -8x = -51 + 12x + -12x

Combine like terms: 12x + -12x = 0
21 + -8x = -51 + 0
21 + -8x = -51

Add '-21' to each side of the equation.
21 + -21 + -8x = -51 + -21

Combine like terms: 21 + -21 = 0
0 + -8x = -51 + -21
-8x = -51 + -21

Combine like terms: -51 + -21 = -72
-8x = -72

Divide each side by '-8'.
x = 9

Simplifying
x = 9

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