Answer :

KaiNC3705
C/-7+3.2=2.7

Step 1) Add 7 to both sides because what you do to one side you must do to the other
         C/-7+3.2=2.7
            +7          +7
          C/+3.2=9.7

Step 2) Subtract 3.2 from both side
          C/+3.2=9.7
              -3.2   -3.2
              C/=6.5

Your answer is C=6.5

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