71=1-7u

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Solution for 71=1-7u equation:


Simplifying
71 = 1 + -7u

Solving
71 = 1 + -7u

Solving for variable 'u'.

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

Add '7u' to each side of the equation.
71 + 7u = 1 + -7u + 7u

Combine like terms: -7u + 7u = 0
71 + 7u = 1 + 0
71 + 7u = 1

Add '-71' to each side of the equation.
71 + -71 + 7u = 1 + -71

Combine like terms: 71 + -71 = 0
0 + 7u = 1 + -71
7u = 1 + -71

Combine like terms: 1 + -71 = -70
7u = -70

Divide each side by '7'.
u = -10

Simplifying
u = -10

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