<PRE><B>Question 506682</B>
Let Bill’s age be B
Then we can say that Greg’s age = 4B – 6, and since Greg is 18, we get:
18 = 4B – 6
18 + 6 = 4B
24 = 4B
B, or Bill is {{{24/4}}} or {{{highlight_green(6)}}} years-old 


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Check
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18 = 4(6) – 6
18 = 24 – 6
18 = 18 (TRUE)


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