We can solve this problem by applying a substraction directly to the fractions, and that is because, if there were 3 1/4 and the family ate 1 1/4, then we have to subtract those two equations to find the remaining part:
3 1/4 - 1 1/4
we separate the whole and fraction parts:
= (3 - 1) + (1/4 - 1/4)
= (2) + (0)
= 2
therefore there were left 2 pecan pies still
Plug in a -20 wherever you see a b
(-20)^2 +4*-20-89/13
400 + -80-89/13
400 - 169/13
400-13
=387
Hope this helps
X is equal to 0.09375. X is equal to 1/16.
You can't take away 6 from 2 but you can switch them and get 6-2 and that's =4 10-8=2 7-5=2