Need fast!
7.
(08.03 lc)
a set of equations is given below:

equation e: a = 5b + 1
equation f: a = 3b + 4

which statement describes a step that can be used to find the solution to the set of equations? (1 point)

equation f can be written as 5b + 1 = 3b + 4.

equation f can be written as b + 1 = 3b + 4.

equation f can be written as a = 3(a – 1) + 4.

equation f can be written as a = 5(a – 4) + 1.