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AveGali [126]
2 years ago
8

The sum of Jahiem and his sister's age is 21. If Jahiem is 7 years older than his

Mathematics
1 answer:
Effectus [21]2 years ago
6 0

Step-by-step explanation:

I think it is meant to use "j" for Jahiem's age.

so,

j + s = 21

j = s + 7

=> s + s + 7 = 21

=> 2s + 7 = 21

=> 2s = 14

=> s = 7

=> j = s + 7 = 7 + 7 = 14

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