How do you solve sqrt25 - 3x -6 = 1253x6=1?

1 Answer
Jul 24, 2015

You isolate xx on one side of the equation.

Explanation:

The thing to notice about this equation is that sqrt(25)25 is actually equal to

sqrt(25) = sqrt(5""^2) = 525=52=5

This means that your original equation becomes

5 - 3x - 6 = 153x6=1

You can easily solve this by first isolating -3x3x on one side of the equation first. Start from

-1 - 3x = 113x=1

Add +1+1 to both sides of the equation to get

cancel(-1) + cancel(1) - 3x = 1 + 1

-3x = 2

Now divide both sides of the equation by -3 to get

(cancel(-3) * x)/cancel(-3) = 2/-3

x = color(green)(-2/3)