-20=2(u+5)-8u

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Solution for -20=2(u+5)-8u equation:


Simplifying
-20 = 2(u + 5) + -8u

Reorder the terms:
-20 = 2(5 + u) + -8u
-20 = (5 * 2 + u * 2) + -8u
-20 = (10 + 2u) + -8u

Combine like terms: 2u + -8u = -6u
-20 = 10 + -6u

Solving
-20 = 10 + -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.
-20 + 6u = 10 + -6u + 6u

Combine like terms: -6u + 6u = 0
-20 + 6u = 10 + 0
-20 + 6u = 10

Add '20' to each side of the equation.
-20 + 20 + 6u = 10 + 20

Combine like terms: -20 + 20 = 0
0 + 6u = 10 + 20
6u = 10 + 20

Combine like terms: 10 + 20 = 30
6u = 30

Divide each side by '6'.
u = 5

Simplifying
u = 5

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