7u+4u-u-u+u=20

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Solution for 7u+4u-u-u+u=20 equation: 


Simplifying
7u + 4u + -1u + -1u + u = 20

Combine like terms: 7u + 4u = 11u
11u + -1u + -1u + u = 20

Combine like terms: 11u + -1u = 10u
10u + -1u + u = 20

Combine like terms: 10u + -1u = 9u
9u + u = 20

Combine like terms: 9u + u = 10u
10u = 20

Solving
10u = 20

Solving for variable 'u'.

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

Divide each side by '10'.
u = 2

Simplifying
u = 2

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