989=11u-(-120)

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Solution for 989=11u-(-120) equation:


Simplifying
989 = 11u + -1(-120)

Multiply -1 * -120
989 = 11u + 120

Reorder the terms:
989 = 120 + 11u

Solving
989 = 120 + 11u

Solving for variable 'u'.

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

Add '-11u' to each side of the equation.
989 + -11u = 120 + 11u + -11u

Combine like terms: 11u + -11u = 0
989 + -11u = 120 + 0
989 + -11u = 120

Add '-989' to each side of the equation.
989 + -989 + -11u = 120 + -989

Combine like terms: 989 + -989 = 0
0 + -11u = 120 + -989
-11u = 120 + -989

Combine like terms: 120 + -989 = -869
-11u = -869

Divide each side by '-11'.
u = 79

Simplifying
u = 79

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