The equation is .

Apply addition property of equality: If a = b then a + c = b + c.

  (Add 13 to each side) \ \

                  (Apply additive inverse property: )

                          (Add: )

Check:

To check the solution, substitute in original equation.

p 13 = 45 32 13 = 45

45 = 45                      (Subtract: 32 13 = 45)

The statement is true.

To graph the solution on the number line:

\
• First draw the number line
\
• Mark a dot at 32 on the number line
\

The value of .