(r-2)2=7

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


Simplifying
(r + -2) * 2 = 7

Reorder the terms:
(-2 + r) * 2 = 7

Reorder the terms for easier multiplication:
2(-2 + r) = 7
(-2 * 2 + r * 2) = 7
(-4 + 2r) = 7

Solving
-4 + 2r = 7

Solving for variable 'r'.

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

Add '4' to each side of the equation.
-4 + 4 + 2r = 7 + 4

Combine like terms: -4 + 4 = 0
0 + 2r = 7 + 4
2r = 7 + 4

Combine like terms: 7 + 4 = 11
2r = 11

Divide each side by '2'.
r = 5.5

Simplifying
r = 5.5

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