48-u=21

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Solution for 48-u=21 equation:


Simplifying
48 + -1u = 21

Solving
48 + -1u = 21

Solving for variable 'u'.

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

Add '-48' to each side of the equation.
48 + -48 + -1u = 21 + -48

Combine like terms: 48 + -48 = 0
0 + -1u = 21 + -48
-1u = 21 + -48

Combine like terms: 21 + -48 = -27
-1u = -27

Divide each side by '-1'.
u = 27

Simplifying
u = 27

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