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73=-12n+9\left(1\times 2+1\right)
Multiply both sides of the equation by 18, the least common multiple of 18,3,2.
73=-12n+9\left(2+1\right)
Multiply 1 and 2 to get 2.
73=-12n+9\times 3
Add 2 and 1 to get 3.
73=-12n+27
Multiply 9 and 3 to get 27.
-12n+27=73
Swap sides so that all variable terms are on the left hand side.
-12n=73-27
Subtract 27 from both sides.
-12n=46
Subtract 27 from 73 to get 46.
n=\frac{46}{-12}
Divide both sides by -12.
n=-\frac{23}{6}
Reduce the fraction \frac{46}{-12} to lowest terms by extracting and canceling out 2.