Question

What will be the value of $s$?
$3s-51=0$

• A.
  $21$
• B.
  $18$
• C.
  $23$
• D.
  $17$

Answer 1

The correct option is D

$17$
Given equation: $3s-51=0$
Step 1: Add $51$ both sides of $3s-51=0$

$3s-51+51=0+51$
$3s=51$

Step 2: Divide by $3$ both sides of $3s=51$

$\frac{3s}{3}=\frac{51}{3}$
$\Rightarrow s=17$

So, $s=17$ is obtained by using arithmatic operations like addition and division.