Question

$The \: first \: term \: of \: an \: AP \: is \: -7 \\ and \: common difference \: 5. \: find \: 18 th \: term \: and \: general \: term. \\ \\ don't \: dare \: to \: spam.$
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Answer 1

PLZ MARK AS BRAINLIEST...... I NEED ONLY ONE BRAINLIEST FOR THE NEXT RANK

Answer 2

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$The \: first \: term \: of \: an \: AP \: is \: -7 \\ and \: common difference \: 5. \: find \: 18 th \: term \: and \: general \: term.$

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$a = - 7 \\ d = 5 \\ a18 = a + (18 - 1)d \\ = > a18 = a + 17d \\ = > - 7 + 17 \times 5 = 78 \\ an = a + (n - 1)5 \\ = - 7 + (n - 1)5 \\ = > an = - 7n + 5n - 5 = 5n - 12 \\ \\ formula \: used : - \: \: \: \: a_{n} = a + (n - 1)d$