−1/3⋅(8 1/7)
change 8 1/7 to an improper fraction
8 1/7 = (7*8 +1)/7 = 57/7
-1/3 * 57/7
-57/21
21 goes into 57 2 times with 15 left over
-2 15/21
divide top and bottom of the fraction by 3
-2 5/7
Choice B
b
change the mixed number to an improper fraction
8 [tex]\frac{1}{7}[/tex] = [tex]\frac{57}{7}[/tex]
- [tex]\frac{1}{3}[/tex] × [tex]\frac{57}{7}[/tex] = - [tex]\frac{19}{7}[/tex] = - 2 [tex]\frac{5}{7}[/tex] → b
