the question given is
[tex]\frac{v}{10}=-8[/tex]to solve this problem, cross multiply both sides
[tex]\begin{gathered} v\times1=-8\times10 \\ v=-80 \end{gathered}[/tex]v = -80
we're given v /10 = -8
write this out on a piece of paper
[tex]\frac{v}{10}=-8[/tex]always try to identify means of operation you can do in order to make v the subject of formula.
in this case, only multiplication is required
so what we'll do now is cross multiply both sides
[tex]\begin{gathered} \frac{v}{10}=\frac{-8}{1} \\ v\times1=-8\times10 \\ v=-80 \end{gathered}[/tex]notice how io
