3(7x+3)=261

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Solution for 3(7x+3)=261 equation: 


Simplifying
3(7x + 3) = 261

Reorder the terms:
3(3 + 7x) = 261
(3 * 3 + 7x * 3) = 261
(9 + 21x) = 261

Solving
9 + 21x = 261

Solving for variable 'x'.

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

Add '-9' to each side of the equation.
9 + -9 + 21x = 261 + -9

Combine like terms: 9 + -9 = 0
0 + 21x = 261 + -9
21x = 261 + -9

Combine like terms: 261 + -9 = 252
21x = 252

Divide each side by '21'.
x = 12

Simplifying
x = 12

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