Question

How do you solve `2sqrt(7x+4)-1=7`?

Answer 1

I got: `x=12/7`

Explanation:

I would rearrange it:
`2sqrt(7x+4)=7+1`
`sqrt(7x+4)=8/2`
`sqrt(7x+4)=4`
square both sides:
`7x+4=16`
`7x=16-4`
`x=12/7`