Answer:
f=9 x 20
Step-by-step explanation:
729. multiple 9 times 9 then 81 times 9 and you get D
Answer:

Step-by-step explanation:
Flip the equation.

Add -9 to both sides


Divide both sides by 7/8

hope this helps
Answer:
31
Step-by-step explanation:
Multiply the numbers 7 * 4, which gets your 28.
= 28+6-12/4
Divide the numbers 12/4, which gets you 3
=28+6-3
Add/Subtract the numbers 28+6-3
= 31
Answer:
The price of each book without sales tax
Step-by-step explanation: