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n-1=4n+8
Use the distributive property to multiply 2 by 2n+4.
n-1-4n=8
Subtract 4n from both sides.
-3n-1=8
Combine n and -4n to get -3n.
-3n=8+1
Add 1 to both sides.
-3n=9
Add 8 and 1 to get 9.
n=\frac{9}{-3}
Divide both sides by -3.
n=-3
Divide 9 by -3 to get -3.