7(x+7)=77

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Solution for 7(x+7)=77 equation: 


Simplifying
7(x + 7) = 77

Reorder the terms:
7(7 + x) = 77
(7 * 7 + x * 7) = 77
(49 + 7x) = 77

Solving
49 + 7x = 77

Solving for variable 'x'.

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

Add '-49' to each side of the equation.
49 + -49 + 7x = 77 + -49

Combine like terms: 49 + -49 = 0
0 + 7x = 77 + -49
7x = 77 + -49

Combine like terms: 77 + -49 = 28
7x = 28

Divide each side by '7'.
x = 4

Simplifying
x = 4

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