SOLUTION: What are the missing terms of the arithmetic sequence -8, , , 3?

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Question 294402: What are the missing terms of the arithmetic sequence -8, , , 3?
Answer by Fombitz(32388) About Me  (Show Source):
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Starting number:+-8
Second number:-8%2Bx
Third number:-8%2Bx%2Bx
Fourth number: -8%2Bx%2Bx%2Bx=3%0D%0A
+-8%2B3x=3+
+3x=11
x=11%2F3
So then the sequence becomes,
First number:+-8
Second number:+-8%2B11%2F3=-24%2F3%2B11%2F3=-13%2F3
Third number:+-13%2F3%2B11%2F3=-2%2F3
Fourth number:+-2%2F3%2B11%2F3=9%2F3=3