MODERATE EXERCISES

(1) Solve for x.

 (a) 

 (b) 

 (c) 

 (a) 

     ==>  0.2 + x          0.2 + x
          ------- = 1  or  ------- = -1  
             3                3

          0.2 + x = 3      0.2 + x = -3

          x = 2.8          x = -3.2

 (b) 

     ==>  3 + 3x          3 + 3x
          ------ = 5  or  ------ = -5
            x               x

          3 + 3x = 5x     3 + 3x = -5

          3 = 2x          3 = -8x

          x = 3/2         x = -3/8

 (c) 

     ==>  0.092 - x             0.092 - x
          --------- = 0.02  or  --------- = -0.02
              13                    13

          0.092 - x = 0.26      0.092 - x = -0.26

          -x = 0.168            -x = -0.352

          x = -0.168            x = 0.352