4=2(u+8)-8u

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Solution for 4=2(u+8)-8u equation:


Simplifying
4 = 2(u + 8) + -8u

Reorder the terms:
4 = 2(8 + u) + -8u
4 = (8 * 2 + u * 2) + -8u
4 = (16 + 2u) + -8u

Combine like terms: 2u + -8u = -6u
4 = 16 + -6u

Solving
4 = 16 + -6u

Solving for variable 'u'.

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

Add '6u' to each side of the equation.
4 + 6u = 16 + -6u + 6u

Combine like terms: -6u + 6u = 0
4 + 6u = 16 + 0
4 + 6u = 16

Add '-4' to each side of the equation.
4 + -4 + 6u = 16 + -4

Combine like terms: 4 + -4 = 0
0 + 6u = 16 + -4
6u = 16 + -4

Combine like terms: 16 + -4 = 12
6u = 12

Divide each side by '6'.
u = 2

Simplifying
u = 2

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