Question

how to solve an=15-3n

Answer 1

You have to have an integer/floating point number or fraction to equal 15 - 3n before you can isolate the variable.

Answer 2

\[an=15-3n\] ?

Answer 3

yes

Answer 4

"a" just represents any number... if there was a number in there you could probably do it, but since there isnt a number we can write so it works for any number we plug in.

Answer 5

add 3n to both sides