3(3+7x)=135

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Solution for 3(3+7x)=135 equation: 


Simplifying
3(3 + 7x) = 135
(3 * 3 + 7x * 3) = 135
(9 + 21x) = 135

Solving
9 + 21x = 135

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 = 135 + -9

Combine like terms: 9 + -9 = 0
0 + 21x = 135 + -9
21x = 135 + -9

Combine like terms: 135 + -9 = 126
21x = 126

Divide each side by '21'.
x = 6

Simplifying
x = 6

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