243=6x+7*3x

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Solution for 243=6x+7*3x equation:


Simplifying
243 = 6x + 7 * 3x

Multiply 7 * 3
243 = 6x + 21x

Combine like terms: 6x + 21x = 27x
243 = 27x

Solving
243 = 27x

Solving for variable 'x'.

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

Add '-27x' to each side of the equation.
243 + -27x = 27x + -27x

Combine like terms: 27x + -27x = 0
243 + -27x = 0

Add '-243' to each side of the equation.
243 + -243 + -27x = 0 + -243

Combine like terms: 243 + -243 = 0
0 + -27x = 0 + -243
-27x = 0 + -243

Combine like terms: 0 + -243 = -243
-27x = -243

Divide each side by '-27'.
x = 9

Simplifying
x = 9

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