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!

Respuesta :

Answer:

[tex]x = 20[/tex]

Step-by-step explanation:

We want to solve the radical equation:

[tex] \sqrt{3x - 11} = 7[/tex]

We squat both sides to get;

[tex]3x - 11 = {7}^{2} [/tex]

We evaluate the exponent to get:

[tex]3x - 11 = 49[/tex]

Add 11 to both sides:

[tex]3x = 49 + 11[/tex]

[tex]3x = 60[/tex]

Divide both sides by 3 to get:

[tex] \frac{3x}{3} = \frac{60}{3} [/tex]

This implies that:

[tex]x = 20[/tex]