(8-d)2+81=100

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Solution for (8-d)2+81=100 equation: 


Simplifying
(8 + -1d) * 2 + 81 = 100

Reorder the terms for easier multiplication:
2(8 + -1d) + 81 = 100
(8 * 2 + -1d * 2) + 81 = 100
(16 + -2d) + 81 = 100

Reorder the terms:
16 + 81 + -2d = 100

Combine like terms: 16 + 81 = 97
97 + -2d = 100

Solving
97 + -2d = 100

Solving for variable 'd'.

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

Add '-97' to each side of the equation.
97 + -97 + -2d = 100 + -97

Combine like terms: 97 + -97 = 0
0 + -2d = 100 + -97
-2d = 100 + -97

Combine like terms: 100 + -97 = 3
-2d = 3

Divide each side by '-2'.
d = -1.5

Simplifying
d = -1.5

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