Question

How do you solve `7.8x - 1 = 63`?

Answer 1

`x= 8.205128` (approximate)

Explanation:

If `7.8x - 1 = 63`
then
`color(white)("XXXX")` `7.8x = 64`
and
`color(white)("XXXX")` `x = 640/78`

which can be solved by hand (if necessary) or by using a calculator to get the answer above.