3(6+7x)=123

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Solution for 3(6+7x)=123 equation: 


Simplifying
3(6 + 7x) = 123
(6 * 3 + 7x * 3) = 123
(18 + 21x) = 123

Solving
18 + 21x = 123

Solving for variable 'x'.

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

Add '-18' to each side of the equation.
18 + -18 + 21x = 123 + -18

Combine like terms: 18 + -18 = 0
0 + 21x = 123 + -18
21x = 123 + -18

Combine like terms: 123 + -18 = 105
21x = 105

Divide each side by '21'.
x = 5

Simplifying
x = 5

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