78-u=172

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Solution for 78-u=172 equation: 


Simplifying
78 + -1u = 172

Solving
78 + -1u = 172

Solving for variable 'u'.

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

Add '-78' to each side of the equation.
78 + -78 + -1u = 172 + -78

Combine like terms: 78 + -78 = 0
0 + -1u = 172 + -78
-1u = 172 + -78

Combine like terms: 172 + -78 = 94
-1u = 94

Divide each side by '-1'.
u = -94

Simplifying
u = -94

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