Mathematics, 30.10.2020 01:00, he0gaubong

Given that the sequence is arithmetic, a31=126 (i. e. the 31st term is 126), and the common difference is 4, find a1 (i. e. the 1st term)

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Given that the sequence is arithmetic, a31=126 (i. e. the 31st term is 126), and the common differen...