Question

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Answer 1

Step-by-step explanation:

$s5 + s7 = 167 \\ a + 4d + a + 6d = 167 \\ 2a + 10d = 167...........(1) \\ s10 = 235 \\ a + 9d = 235 \\ 2a + 18d = 470............(2) \\ \\ from (1) \: and \: (2) = > \\ 8d = 303 \\ d = 37.87 \\ \\ 2a + 10d = 167 \\ 2a = 167 - 378.7 \\ a = 105.875 \\ ap \: will \: be = > \\ (a - d) \: and \: a \: and \: (a + d) \\ \\ 68.005 \: and \: 105.875 \: and \: 143.745$

Answer 2

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