Pre-Algebra Examples

$4 (x) = \sqrt{{(x + 7)}^{2}}$

Step 1

Multiply $4$ by $x$ .

$4 x = \sqrt{{(x + 7)}^{2}}$

Step 2

Pull terms out from under the radical, assuming positive real numbers.

$4 x = x + 7$

Step 3

Graph each side of the equation. The solution is the x-value of the point of intersection.

$x = \frac{7}{3}$

Step 4