The sum of 5 times a number and 4 is - 9

The sum of 5 (x) + 4 = (-9)

We have to isolate the x so we subtract 4.

5 (x) + 4 = (-9)

5 (x) - 4 = - 4

5 (x) = ( - 13)

Now we have to continue to isolate the x.

So now we have to divide by 5.

5 (x) / 5 = (-13) / 5

and that's x = (-2.6)