3x+243=12x-9

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Solution for 3x+243=12x-9 equation:


Simplifying
3x + 243 = 12x + -9

Reorder the terms:
243 + 3x = 12x + -9

Reorder the terms:
243 + 3x = -9 + 12x

Solving
243 + 3x = -9 + 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.
243 + 3x + -12x = -9 + 12x + -12x

Combine like terms: 3x + -12x = -9x
243 + -9x = -9 + 12x + -12x

Combine like terms: 12x + -12x = 0
243 + -9x = -9 + 0
243 + -9x = -9

Add '-243' to each side of the equation.
243 + -243 + -9x = -9 + -243

Combine like terms: 243 + -243 = 0
0 + -9x = -9 + -243
-9x = -9 + -243

Combine like terms: -9 + -243 = -252
-9x = -252

Divide each side by '-9'.
x = 28

Simplifying
x = 28

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