291=30-u

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Solution for 291=30-u equation:


Simplifying
291 = 30 + -1u

Solving
291 = 30 + -1u

Solving for variable 'u'.

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

Add 'u' to each side of the equation.
291 + u = 30 + -1u + u

Combine like terms: -1u + u = 0
291 + u = 30 + 0
291 + u = 30

Add '-291' to each side of the equation.
291 + -291 + u = 30 + -291

Combine like terms: 291 + -291 = 0
0 + u = 30 + -291
u = 30 + -291

Combine like terms: 30 + -291 = -261
u = -261

Simplifying
u = -261

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