7=(7-x)2

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Solution for 7=(7-x)2 equation:


Simplifying
7 = (7 + -1x) * 2

Reorder the terms for easier multiplication:
7 = 2(7 + -1x)
7 = (7 * 2 + -1x * 2)
7 = (14 + -2x)

Solving
7 = 14 + -2x

Solving for variable 'x'.

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

Add '2x' to each side of the equation.
7 + 2x = 14 + -2x + 2x

Combine like terms: -2x + 2x = 0
7 + 2x = 14 + 0
7 + 2x = 14

Add '-7' to each side of the equation.
7 + -7 + 2x = 14 + -7

Combine like terms: 7 + -7 = 0
0 + 2x = 14 + -7
2x = 14 + -7

Combine like terms: 14 + -7 = 7
2x = 7

Divide each side by '2'.
x = 3.5

Simplifying
x = 3.5

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