SOLUTION: please help me solve this algebra equation jean and chinoso's age add up to 29, 7 years ago jean was as old as chinoso find their present ages ?

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Question 1127562: please help me
solve this algebra equation jean and chinoso's age add up to 29, 7 years ago jean was as old as chinoso find their present ages ?
Answer by math_helper(2461) (Show Source):
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(1) J = C + 7 (from "7 years ago Jean was as old as Chinoso")
(2) J + C = 29 (�"Jean and Chinoso's age add up to 29")

Substitute for J:
(C+7) + C = 29
2C = 22 �> C = 11 �> J = 18
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Ans: Chinoso is 11 and Jean is 18
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Check: 11+18 = 29
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Alternate (shorter) solution, using Jean's age (expressed in terms of C):
C+7 = (29-C) �> 2C = 22 �> C=11 �> J=18

�and using Chinoso's age (expressed in terms of J):
J-7 = 29-J �> 2J = 36 �> J=18 �> C=11