Question

What is the answer to: 3x-11(that part is under a square sign) then =7. Please give an explanation to this problem thank you!

Answer 1

`x = 20`

Explanation:

We want to solve the radical equation:

`√(3x - 11) = 7`

We squat both sides to get;

`3x - 11 = {7}^(2)`

We evaluate the exponent to get:

`3x - 11 = 49`

Add 11 to both sides:

`3x = 49 + 11`

`3x = 60`

Divide both sides by 3 to get:

`(3x)/(3) = (60)/(3)`

This implies that:

`x = 20`