Solve for n
n=-6.2
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2n-0.4-4n=12
Subtract 4n from both sides.
-2n-0.4=12
Combine 2n and -4n to get -2n.
-2n=12+0.4
Add 0.4 to both sides.
-2n=12.4
Add 12 and 0.4 to get 12.4.
n=\frac{12.4}{-2}
Divide both sides by -2.
n=\frac{124}{-20}
Expand \frac{12.4}{-2} by multiplying both numerator and the denominator by 10.
n=-\frac{31}{5}
Reduce the fraction \frac{124}{-20} to lowest terms by extracting and canceling out 4.
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