Answer:
18
Step-by-step explanation:
Divide the total weight of dough by the amount required for 1 pizza
20 ÷ 1 ( change mixed numbers to improper fractions )
= ÷
• leave first fraction , change ÷ to × , turn second fraction ' upside down '
= × ( cancel 81 and 9 by 9 )
= × 8 ( cancel 4 and 8 by 4 )
= 9 × 2
= 18 pizza's
what do you mean by 2 1 2 pounds less?
2/3n +4 = 7
2/3n = 3
n = 3 / 2/3
n = 4 1/2
4 3/8 < 4 2/3 < 4 5/6 < 5 1/4
Hope it helped!