The equation is .

Apply addition property of equality: Add 14 to each side.

                      (Apply additive inverse property: )

                            (Apply additive identity property: )

Check:

To check the solution, substitute y = 39 in original equation.

25 = y 14 25 = 39 14

25 = 25                           (Subtract: 39 – 14 = 25)

The statement is true.

To graph the solution on the number line:

\
• First draw the number line
\
• Mark a dot at 39 on the number line
\

The value of y = 39.