Question

If Geo had 3/8 of a pizza and his sister had 7/9 of another pizza, how much pizza do they have in all?

Answer 1

Answer:

[see below]

Step-by-step explanation:

Geo has 3/8 of a pizza. His sister has 7/9 of another pizza.

Add the values:

$\frac{3}{8}+\frac{7}{9}\\\\ \text{The LCM of the denominators is 72.}\\\\\frac{3*9}{8*9}=\frac{27}{72}\\\\\frac{7*8}{8*9}=\frac{56}{72}\\\\\frac{27+56}{72}=\frac{83}{72}\\\\\frac{83}{72}=1\frac{11}{72}\\\\\boxed{\frac{3}{8}+\frac{7}{9} = 1\frac{11}{72}}$