216=-u+100

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Solution for 216=-u+100 equation:


Simplifying
216 = -1u + 100

Reorder the terms:
216 = 100 + -1u

Solving
216 = 100 + -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.
216 + u = 100 + -1u + u

Combine like terms: -1u + u = 0
216 + u = 100 + 0
216 + u = 100

Add '-216' to each side of the equation.
216 + -216 + u = 100 + -216

Combine like terms: 216 + -216 = 0
0 + u = 100 + -216
u = 100 + -216

Combine like terms: 100 + -216 = -116
u = -116

Simplifying
u = -116

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