7-u=-7+u

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


Simplifying
7 + -1u = -7 + u

Solving
7 + -1u = -7 + 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.
7 + -1u + -1u = -7 + u + -1u

Combine like terms: -1u + -1u = -2u
7 + -2u = -7 + u + -1u

Combine like terms: u + -1u = 0
7 + -2u = -7 + 0
7 + -2u = -7

Add '-7' to each side of the equation.
7 + -7 + -2u = -7 + -7

Combine like terms: 7 + -7 = 0
0 + -2u = -7 + -7
-2u = -7 + -7

Combine like terms: -7 + -7 = -14
-2u = -14

Divide each side by '-2'.
u = 7

Simplifying
u = 7

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