Question

How do you solve `-30n=-27n-63`?

Answer 1

`n=21`

Explanation:

`-30n=-27n-63`

Now adding `27n` on both sides

`-30n+27n=-27n+27n-63`

or `-30n+27n=-cancel(27n)+cancel(27n)-63`

or `-3n=-63`

Now multiplying each side by `-1/3`, multiplicative inverse of `-3` coefficient of `n`, we get

or `-3nxx-1/3=-63xx-1/3`

or `n=-63xx-1/3=-21cancel(63)xx-1/cancel3`

or `n=21`