9-20u-6=u+15

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Solution for 9-20u-6=u+15 equation:


Simplifying
9 + -20u + -6 = u + 15

Reorder the terms:
9 + -6 + -20u = u + 15

Combine like terms: 9 + -6 = 3
3 + -20u = u + 15

Reorder the terms:
3 + -20u = 15 + u

Solving
3 + -20u = 15 + 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.
3 + -20u + -1u = 15 + u + -1u

Combine like terms: -20u + -1u = -21u
3 + -21u = 15 + u + -1u

Combine like terms: u + -1u = 0
3 + -21u = 15 + 0
3 + -21u = 15

Add '-3' to each side of the equation.
3 + -3 + -21u = 15 + -3

Combine like terms: 3 + -3 = 0
0 + -21u = 15 + -3
-21u = 15 + -3

Combine like terms: 15 + -3 = 12
-21u = 12

Divide each side by '-21'.
u = -0.5714285714

Simplifying
u = -0.5714285714

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