5u+x=21

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Solution for 5u+x=21 equation: 


Simplifying
5u + x = 21

Solving
5u + x = 21

Solving for variable 'u'.

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

Add '-1x' to each side of the equation.
5u + x + -1x = 21 + -1x

Combine like terms: x + -1x = 0
5u + 0 = 21 + -1x
5u = 21 + -1x

Divide each side by '5'.
u = 4.2 + -0.2x

Simplifying
u = 4.2 + -0.2x

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