Aset of equations is given below:
equation a: e = 4f + 1
equation b: e = 3f + 5
which of the following is a step that can be used to find the solution to the set of equations?

a. 4f + 1 = 3f
b. 4f = 3f + 5
c. 4f + 5 = 3f + 5
d. 4f + 1 = 3f + 5

Filling in one equation into the other will lead to elimination of one variable, enabling you to solve the other. In this case it is very easy to eliminate variable e right away. So you end up equating the terms of A and B:

4f + 1 = e = 3f+ 5

Forget e and you see it is answer D.

For the answer to the question above, the answer is
2x^2-y2-2y-5xy
A.There are 4 terms in the simplified equation.
B. In the simplified equation, there are 3 terms which are negative.
I hope my answer helped you. Have a nice day!