Question

Frida started to solve the equation 3x = 36 by adding 3 to both sides. Explain why Friday’s method will not solve the equation.

Answer 1

Explanation:

The equation is $3x=36$

Frida started to solve the equation by adding 3 to both sides.

Thus, the equation becomes,

$3x+3=39$

This will not solve the equation.

To solve the equation $3x=36$, we need to divide both sides of the equation by 3.

Thus, the equation becomes,

$\frac{3x}{3} =\frac{36}{3}$

Dividing we get,

$x=12$

Hence, Frida cannot solve the equation by adding 3 to both sides of the equation. To solve the equation, Frida needs to divide both sides of the equation by 3.

Thus, to solve the equation $3x=36$ Frida needs to divide both sides of the equation by 3.