(X-20)2=25

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Solution for (X-20)2=25 equation: 


Simplifying
(X + -20) * 2 = 25

Reorder the terms:
(-20 + X) * 2 = 25

Reorder the terms for easier multiplication:
2(-20 + X) = 25
(-20 * 2 + X * 2) = 25
(-40 + 2X) = 25

Solving
-40 + 2X = 25

Solving for variable 'X'.

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

Add '40' to each side of the equation.
-40 + 40 + 2X = 25 + 40

Combine like terms: -40 + 40 = 0
0 + 2X = 25 + 40
2X = 25 + 40

Combine like terms: 25 + 40 = 65
2X = 65

Divide each side by '2'.
X = 32.5

Simplifying
X = 32.5

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