30.9-4u=5.3

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Solution for 30.9-4u=5.3 equation: 


Simplifying
30.9 + -4u = 5.3

Solving
30.9 + -4u = 5.3

Solving for variable 'u'.

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

Add '-30.9' to each side of the equation.
30.9 + -30.9 + -4u = 5.3 + -30.9

Combine like terms: 30.9 + -30.9 = 0.0
0.0 + -4u = 5.3 + -30.9
-4u = 5.3 + -30.9

Combine like terms: 5.3 + -30.9 = -25.6
-4u = -25.6

Divide each side by '-4'.
u = 6.4

Simplifying
u = 6.4

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