No answer is possible.
Without the picture ... or a detailed explanation ...
it's not possible to tell what 'b' is.
Answer: by combining 1/4 and 1/3 and then you find the amount of left over dog food. Multiply the fractions so they have common denominators, then add. You will get 3/12 + 4/12 = 7/12. 12 - 7 = 5, so there is 5/12 of the bag left.
Step-by-step explanation:
Answer:
Commutative Property of Multiplication.