The equation is –17 + h = –2.2 – 3.4.

–17 + h = –5.6             (Subtract: –2.2 – 3.4 = –5.6)

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

–17 + h + 17 = –5.6 + 17  (Add 17 to each side) \ \

h = –5.6 + 17               (Apply additive inverse property: –17 + 17 = 0)

h = 11.4                        (Add: –5.6 + 17 = 11.4)

Check:

To check the solution, substitute h = 11.4 in original equation.

–17 + h = –5.6 –17 + 11.4 = –5.6

–5.6 = –5.6                  (Add: –17 + 11.4 = –5.6)

The statement is true.

The value of h = 11.4.