4u-8u=-8-20

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Solution for 4u-8u=-8-20 equation: 


Simplifying
4u + -8u = -8 + -20

Combine like terms: 4u + -8u = -4u
-4u = -8 + -20

Combine like terms: -8 + -20 = -28
-4u = -28

Solving
-4u = -28

Solving for variable 'u'.

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

Divide each side by '-4'.
u = 7

Simplifying
u = 7

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