5v - [tex] \frac{4}{10} [/tex] = [tex] \frac{4}{5} [/tex] Multiply both sides by 10
50v - 4 = [tex] \frac{40}{5} [/tex] Divide the fraction
50v - 4 = 8 Add 4 to both sides
50v = 12 Divide both sides by 50
v = [tex] \frac{12}{50} [/tex] SImplify the fraction
v = [tex] \frac{6}{25} [/tex]
