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i will give a gold medal
well I would check to see if it was arithmetic sequence first : do you have term-previous term=same number like I mean are all the following equal: 4-7=? 1-4=? -2-1=?
hold up let me put the answeres in
it wont let me copy and paste them in
well I asked you a question and you haven't answered yet so I don't know if you mean me or someone else because you don't understand what I'm asking you?
I'm asking you if all the differences are the same above 4-7=? 1-4=? -2-1=?
if we can establish all of these are the same then we have an arithmetic sequence and that means we have a common difference
\[a_n=a_1+d(n-1)\] d represents the common difference if there is one So I'm still asking you the following questions: 4-7=? 1-4=? -2-1=?
i have no idea what im doing lol
So you haven't done subtraction yet?
|dw:1438708092263:dw| do you want to try doing 1-4=? and -2-1=?
Come on... you have to know subtraction to know how to do this problem. You know 1-4 and -2-1 and 4-7 all have the same difference which is -3 -3 is your common difference you do have an arithmetic sequence use the equation I gave you above for a_n
sorry computer turned off