(x+3.5)2=16

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Solution for (x+3.5)2=16 equation:


Simplifying
(x + 3.5) * 2 = 16

Reorder the terms:
(3.5 + x) * 2 = 16

Reorder the terms for easier multiplication:
2(3.5 + x) = 16
(3.5 * 2 + x * 2) = 16
(7 + 2x) = 16

Solving
7 + 2x = 16

Solving for variable 'x'.

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

Add '-7' to each side of the equation.
7 + -7 + 2x = 16 + -7

Combine like terms: 7 + -7 = 0
0 + 2x = 16 + -7
2x = 16 + -7

Combine like terms: 16 + -7 = 9
2x = 9

Divide each side by '2'.
x = 4.5

Simplifying
x = 4.5

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