Answer:
1386
Step-by-step explanation:
If you have trouble with that, you can multiply 66 by 20, then 66*1, and add them (break apart the 21.)
Answer:(-3,6)(-31,-3)(-3,3)
Step-by-step explanation:
One inch of board is left
if you subtract the two 3 inches pieces from the board
the further subtract the 24 inches from the three 8 inches pieces you get 31-30
Answer:
81
Step-by-step explanation:

9 x 9 = 81