Question

solve n=4r for r

Answer 1

well u must isolate r ... so i would say divide by 4 see what happens.

Answer 2

*divide both sides by 4

Answer 3

its easy.. divide 4 on both sides and u will be left with n/4=r

Answer 4

so it would be n=4r

Answer 5

n/4=4r/4
here the 4r cancels with the 4 and u r left with r
so the answer will be r=n/4

Answer 6

here are the choises
A r=4n
B r=4r
C r=n+4
D r=n/4

Answer 7

its D