Temerature Conversions

Question 1

9C = 5F - 160

Answer 1

Example 1: 
75*F = 9C = 5 (75) - 160
            9C = 375 - 160
            9C = 215
            9C = 215
            \_\_\_    \_\_\_
             9        9
              C = 24*

Example 2: 
25* = 9(25) = 5F -160
           225 = 5F - 160
 225 + 169 = 5F - 160 + 160
            385 = 5F 
            \_\_\_     \_\_
              5       5
             77* = F