Question

9m² - 49 = 0

Explanation:

Step1: Move -49 to the right side

$9m^{2}=49$

Step2: Divide both sides by 9

$m^{2}=\frac{49}{9}$

Step3: Take square root on both sides

$m = \pm\sqrt{\frac{49}{9}}$

Step4: Simplify the square root

$m=\pm\frac{7}{3}$

Answer:

$m = \frac{7}{3}$ or $m = -\frac{7}{3}$