N=25 because 20 divided by 4 is 5 which is 1/5 of n meaning 5x5 is 25
X=7 b/c you have to put all the x's on one side so you'll get -3x=-21 and you just divide by -3 and you get 7.
Answer:
Probably shouldn't cheat on tests
Step-by-step explanation:
just sayinnn
:/
Pretty sure option 4 is your answer though. Not 100% because the picture is a bit blurry
Answer:
7
Step-by-step explanation:
21=3x
x=7
