Question

If $4$ is added to a number and the sum is multiplied by $3$, the result is $30$. Find the number.

Answer 1

Let the number be $x$.

Then according to given condition,

$3(x+4)=30$

$\Rightarrow 3x+12=30$

Subtract $12$ on both the sides, we have

$3x+12-12=30-12$

$\Rightarrow 3x=18$

Divide $3$ on both the sides,

$\frac{3x}{3}=\frac{18}{3}$

$\Rightarrow x=6$