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2\times 6u^{-1}-13u^{-1}+24=0
Multiply both sides of the equation by 4, the least common multiple of 2,4.
12u^{-1}-13u^{-1}+24=0
Multiply 2 and 6 to get 12.
-u^{-1}+24=0
Combine 12u^{-1} and -13u^{-1} to get -u^{-1}.
-u^{-1}=-24
Subtract 24 from both sides. Anything subtracted from zero gives its negation.
u^{-1}=\frac{-24}{-1}
Divide both sides by -1.
u^{-1}=24
Fraction \frac{-24}{-1} can be simplified to 24 by removing the negative sign from both the numerator and the denominator.
\frac{1}{u}=24
Reorder the terms.
1=24u
Variable u cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by u.
24u=1
Swap sides so that all variable terms are on the left hand side.
u=\frac{1}{24}
Divide both sides by 24.