Answer:
z = 7
Step-by-step explanation:
Change the mixed numbers into improper fractions, that is
z - [tex]\frac{13}{3}[/tex] = [tex]\frac{8}{3}[/tex]
Multiply through by 3 to clear the fractions
3z - 13 = 8 ( add 13 to both sides )
3z = 21 ( divide both sides by 3 )
z = 7
