Question

Solve the equation:
-7/3n = -42






A. n=18




B. n=298




C.n=92




D. n= -21 4/7

Answer 1

multiply both sides by 3n
multiplying just one side by 3n/3n does nothing

Answer 2

ok

Answer 3

is it \[\frac{ 7 }{ 3n } or \frac{ 7 }{ 3 } n\]?

Answer 4

Oh, sorry. I made a mistake. You should times 3n on both sides. Then you will get -7=-42*3n.
Finally
-7=-126n
n=7/126