Question

sara had 87 signs to hang up around the school. she gave 13 signs to each of 3 students. then she took the remaining signs and divided them up equally between the 3 students. find a solution to the equation. 3(x + 13) = 87, x = \boxed{}

Explanation:

Step1: Divide both sides by 3

$\frac{3(x+13)}{3} = \frac{87}{3}$
$x+13 = 29$

Step2: Subtract 13 from both sides

$x+13-13 = 29-13$

Answer:

$x=16$