Question

Use the properties of an equality to solve the following equations.

(11) 18 = 3u

Answer 1

18 = 3u
Using the division property of equality, we get:
$\frac{18}{3}=\frac{3u}{3}$
⇒ 6 = u × 1

We know:
1 × Any number = The same number
⇒ 6 = u

Thus, the value of u is 6.