3(7x-7)=126

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Solution for 3(7x-7)=126 equation: 


Simplifying
3(7x + -7) = 126

Reorder the terms:
3(-7 + 7x) = 126
(-7 * 3 + 7x * 3) = 126
(-21 + 21x) = 126

Solving
-21 + 21x = 126

Solving for variable 'x'.

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

Add '21' to each side of the equation.
-21 + 21 + 21x = 126 + 21

Combine like terms: -21 + 21 = 0
0 + 21x = 126 + 21
21x = 126 + 21

Combine like terms: 126 + 21 = 147
21x = 147

Divide each side by '21'.
x = 7

Simplifying
x = 7

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