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Find the solution of following equation from the given ????????

+3 votes
c + 12 = 30; 8, 16, 18.
asked Feb 26, 2013 in PRE-ALGEBRA by angel12 Scholar

1 Answer

+4 votes

The replacement set is c={8,16,18}

Replace c in c+12=30  with each value in the replacement set

and check Whether the equation is true.

c

      c+12=30

       True or False

8

      8+12=30→20#30

           False

16

       16+12=30→28#30

           False

18

        18+12=30→30=30

           True

Since c = 18 makes the equation true, the solution of c+12=30 is 18.

The solution set is {18}.

answered Feb 26, 2013 by steve Scholar

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