Question

Kayla had $25 to spend on two pencils after buying them she had $21 how much did each pencil cost.

Answer 1

write an equation that represents the situation letting x be the cost of the pencils

$25-2x=21$

solve for x

$\begin{gathered} -2x=21-25 \\ -2x=-4 \\ x=\frac{-4}{-2} \\ x=2 \end{gathered}$

each pencil costs $2.