2u+20=100

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Solution for 2u+20=100 equation: 


Simplifying
2u + 20 = 100

Reorder the terms:
20 + 2u = 100

Solving
20 + 2u = 100

Solving for variable 'u'.

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

Add '-20' to each side of the equation.
20 + -20 + 2u = 100 + -20

Combine like terms: 20 + -20 = 0
0 + 2u = 100 + -20
2u = 100 + -20

Combine like terms: 100 + -20 = 80
2u = 80

Divide each side by '2'.
u = 40

Simplifying
u = 40

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