-9u-10=21u+18

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Solution for -9u-10=21u+18 equation:


Simplifying
-9u + -10 = 21u + 18

Reorder the terms:
-10 + -9u = 21u + 18

Reorder the terms:
-10 + -9u = 18 + 21u

Solving
-10 + -9u = 18 + 21u

Solving for variable 'u'.

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

Add '-21u' to each side of the equation.
-10 + -9u + -21u = 18 + 21u + -21u

Combine like terms: -9u + -21u = -30u
-10 + -30u = 18 + 21u + -21u

Combine like terms: 21u + -21u = 0
-10 + -30u = 18 + 0
-10 + -30u = 18

Add '10' to each side of the equation.
-10 + 10 + -30u = 18 + 10

Combine like terms: -10 + 10 = 0
0 + -30u = 18 + 10
-30u = 18 + 10

Combine like terms: 18 + 10 = 28
-30u = 28

Divide each side by '-30'.
u = -0.9333333333

Simplifying
u = -0.9333333333

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