((5+x)+7)7=121

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Solution for ((5+x)+7)7=121 equation:


Simplifying
((5 + x) + 7) * 7 = 121

Remove parenthesis around (5 + x)
(5 + x + 7) * 7 = 121

Reorder the terms:
(5 + 7 + x) * 7 = 121

Combine like terms: 5 + 7 = 12
(12 + x) * 7 = 121

Reorder the terms for easier multiplication:
7(12 + x) = 121
(12 * 7 + x * 7) = 121
(84 + 7x) = 121

Solving
84 + 7x = 121

Solving for variable 'x'.

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

Add '-84' to each side of the equation.
84 + -84 + 7x = 121 + -84

Combine like terms: 84 + -84 = 0
0 + 7x = 121 + -84
7x = 121 + -84

Combine like terms: 121 + -84 = 37
7x = 37

Divide each side by '7'.
x = 5.285714286

Simplifying
x = 5.285714286

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