-54-2u=-u+21

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Solution for -54-2u=-u+21 equation:


Simplifying
-54 + -2u = -1u + 21

Reorder the terms:
-54 + -2u = 21 + -1u

Solving
-54 + -2u = 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.
-54 + -2u + u = 21 + -1u + u

Combine like terms: -2u + u = -1u
-54 + -1u = 21 + -1u + u

Combine like terms: -1u + u = 0
-54 + -1u = 21 + 0
-54 + -1u = 21

Add '54' to each side of the equation.
-54 + 54 + -1u = 21 + 54

Combine like terms: -54 + 54 = 0
0 + -1u = 21 + 54
-1u = 21 + 54

Combine like terms: 21 + 54 = 75
-1u = 75

Divide each side by '-1'.
u = -75

Simplifying
u = -75

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