(x-1)2-16=20

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Solution for (x-1)2-16=20 equation:


Simplifying
(x + -1) * 2 + -16 = 20

Reorder the terms:
(-1 + x) * 2 + -16 = 20

Reorder the terms for easier multiplication:
2(-1 + x) + -16 = 20
(-1 * 2 + x * 2) + -16 = 20
(-2 + 2x) + -16 = 20

Reorder the terms:
-2 + -16 + 2x = 20

Combine like terms: -2 + -16 = -18
-18 + 2x = 20

Solving
-18 + 2x = 20

Solving for variable 'x'.

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

Add '18' to each side of the equation.
-18 + 18 + 2x = 20 + 18

Combine like terms: -18 + 18 = 0
0 + 2x = 20 + 18
2x = 20 + 18

Combine like terms: 20 + 18 = 38
2x = 38

Divide each side by '2'.
x = 19

Simplifying
x = 19

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