Answer :

Z = 1/2G + 6
G = 4

Z = 1/2(4) + 6
Z = 2 + 6
Z = 8 <=== Zera is 8 years old

Answer:

8

Step-by-step explanation:

If Gary is 4, half of 4 would be 2, so add 2 to 6 and you get 2 + 6 = 8

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