So, i did this,
7.8*10=70
and then add 12
i got 82
did this help??
7/8 because there are 8 pieces of pizza and they eat 7 slices of pizza.
Answer:

Step-by-step explanation:
To solve this problem we need to write the mixed fraction as a fractional number, as follows:


Then, evaluating the expression:
×
= 
→ 