(a-10)2=121

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Solution for (a-10)2=121 equation:


Simplifying
(a + -10) * 2 = 121

Reorder the terms:
(-10 + a) * 2 = 121

Reorder the terms for easier multiplication:
2(-10 + a) = 121
(-10 * 2 + a * 2) = 121
(-20 + 2a) = 121

Solving
-20 + 2a = 121

Solving for variable 'a'.

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

Add '20' to each side of the equation.
-20 + 20 + 2a = 121 + 20

Combine like terms: -20 + 20 = 0
0 + 2a = 121 + 20
2a = 121 + 20

Combine like terms: 121 + 20 = 141
2a = 141

Divide each side by '2'.
a = 70.5

Simplifying
a = 70.5

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