Solve for v, n
v=-\frac{4}{5}=-0.8\text{, }n=\frac{5}{3}\approx 1.666666667
v=-5\text{, }n=\frac{5}{3}\approx 1.666666667
v=-\frac{4}{5}=-0.8\text{, }n=\frac{3}{2}=1.5
v=-5\text{, }n=\frac{3}{2}=1.5
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