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Answer :

Sarabethhgo

Answer:

3 or 13? i think

Step-by-step explanation:

Charlotte1963go
Rachel’s age is x.
Her brother’s age is y.

x=2y-4=8-y

Solving this results in (x,y)=(4,4), which are coordinates.
These coordinated mean x (Rachel’s age) is 4, and y (her brother’s age) is also 4.

=Rachel’s brother is 4.

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