Which of the following situations may cause someone to use substitution, in order to solve a system of equations?

a. an exact solution is not needed.
b. one of the equations may easily be solved for a variable.
c. an exact solution is needed.
d. both of the equations are solved for one variable.

the answer is 28

step-by-step explanation:

konichiwa~! my name is zalgo and i am here to answer your anime-related question today. more than likely, kirishima would kill izuku, marry mino and kiss momo. all of this would be my opinion by the way. (and i am also a weeb lol)

i hope this you! : d

stay and stay proud! " - zalgo

(and do you think you can mark me as brainliest? i'd greatly appreciate it! arigato~! )