(r-7)2=289

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Solution for (r-7)2=289 equation:


Simplifying
(r + -7) * 2 = 289

Reorder the terms:
(-7 + r) * 2 = 289

Reorder the terms for easier multiplication:
2(-7 + r) = 289
(-7 * 2 + r * 2) = 289
(-14 + 2r) = 289

Solving
-14 + 2r = 289

Solving for variable 'r'.

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

Add '14' to each side of the equation.
-14 + 14 + 2r = 289 + 14

Combine like terms: -14 + 14 = 0
0 + 2r = 289 + 14
2r = 289 + 14

Combine like terms: 289 + 14 = 303
2r = 303

Divide each side by '2'.
r = 151.5

Simplifying
r = 151.5

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