It is -7/2 when the variables are substituted
Factor
fg-5g+4f-20
g(f-5)+4(f-5)
now we factor out the (f-5) in both terms
(f-5)(g+4) is the factored out form
Point slope formula is what to believe
Answer:
40 quarts.
Step-by-step explanation:
Let x =quarts of the 50% solution
so, according to the question
the typical mixture equivalent equation will be like this

so the answer will be 40 quarts of 50% solution should be added.