5u-81=u-1

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Solution for 5u-81=u-1 equation:


Simplifying
5u + -81 = u + -1

Reorder the terms:
-81 + 5u = u + -1

Reorder the terms:
-81 + 5u = -1 + u

Solving
-81 + 5u = -1 + u

Solving for variable 'u'.

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

Add '-1u' to each side of the equation.
-81 + 5u + -1u = -1 + u + -1u

Combine like terms: 5u + -1u = 4u
-81 + 4u = -1 + u + -1u

Combine like terms: u + -1u = 0
-81 + 4u = -1 + 0
-81 + 4u = -1

Add '81' to each side of the equation.
-81 + 81 + 4u = -1 + 81

Combine like terms: -81 + 81 = 0
0 + 4u = -1 + 81
4u = -1 + 81

Combine like terms: -1 + 81 = 80
4u = 80

Divide each side by '4'.
u = 20

Simplifying
u = 20

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