6. Arithemetic Sequences
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What makes a sequence arithmetic?
Is the Sequence Arithmetic? Yes
Common Difference: -6
87 +( - 6) âź¶ 81 +( - 6) âź¶ 75 +( - 6) âź¶ 69 +( - 6) âź¶ ... Therefore, the sequence is arithmetic and the common difference is - 6.