Answer :
Since he had 7/8 of 12 slices, you have to multiply the two, since "of" is the same as "times."
[tex] \frac{7}{8}(12)= \frac{7}{8}( \frac{12}{1})= \frac{7(12)}{8(1)}= \frac{84}{8}=10 \frac{1}{2} [/tex]
Henry ate 10 1/2 slices of pizza.
[tex] \frac{7}{8}(12)= \frac{7}{8}( \frac{12}{1})= \frac{7(12)}{8(1)}= \frac{84}{8}=10 \frac{1}{2} [/tex]
Henry ate 10 1/2 slices of pizza.