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30+30\left(n-2\right)\left(-\frac{1}{2}\right)=4\left(n-2\right)
Variable n cannot be equal to 2 since division by zero is not defined. Multiply both sides of the equation by 30\left(n-2\right), the least common multiple of n-2,2,15.
30-15\left(n-2\right)=4\left(n-2\right)
Multiply 30 and -\frac{1}{2} to get -15.
30-15n+30=4\left(n-2\right)
Use the distributive property to multiply -15 by n-2.
60-15n=4\left(n-2\right)
Add 30 and 30 to get 60.
60-15n=4n-8
Use the distributive property to multiply 4 by n-2.
60-15n-4n=-8
Subtract 4n from both sides.
60-19n=-8
Combine -15n and -4n to get -19n.
-19n=-8-60
Subtract 60 from both sides.
-19n=-68
Subtract 60 from -8 to get -68.
n=\frac{-68}{-19}
Divide both sides by -19.
n=\frac{68}{19}
Fraction \frac{-68}{-19} can be simplified to \frac{68}{19} by removing the negative sign from both the numerator and the denominator.