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The first term of an arithmetic sequence is -3 and the fifteenth term is 53. What is the common difference of the sequence?

The first term of an arithmetic sequence is -3 and the fifteenth term is 53. What is the common difference of the sequence?

Asked by: Guest | Views: 57
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Guest [Entry]

"53=-3+(15-1)d
53=-3+14d
56=14d
56/14=d
4=d

Common difference is 4."