Answer:
-4/7
Step-by-step explanation:
2/3(1+n)=-1/2n
2/3+2/3n=-1/2n
2/3=-1/2n-2/3n
2/3=-3/6n-4/6n
2/3=-7/6n
n=(2/3)/(-7/6)
n=(2/3)(-6/7)
n=-12/21
simplify
n=-4/7
