214=21-u

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Solution for 214=21-u equation:


Simplifying
214 = 21 + -1u

Solving
214 = 21 + -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.
214 + u = 21 + -1u + u

Combine like terms: -1u + u = 0
214 + u = 21 + 0
214 + u = 21

Add '-214' to each side of the equation.
214 + -214 + u = 21 + -214

Combine like terms: 214 + -214 = 0
0 + u = 21 + -214
u = 21 + -214

Combine like terms: 21 + -214 = -193
u = -193

Simplifying
u = -193

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