Just simply divide
ALSO REMEMBER: That if there's one or an odd number of negative in multiplication or division the answer would be negative
-20/5= -4
So
b= -4
X= total number of animals
Total times percent of puppies equals number of puppies. Use numbers you know to find x.
x * 32%= 40 puppies
x * 0.32= 40 puppies
0.32x= 40
x= 125 total animals
Total - #puppies = # cats
125 - 40 = 85 cats
Answer- 40 puppies and 85 cats
The difference between -4 and 6 would be 2.
Hope this helps!