Asked by Prosper
The sum of the first 4 term of linear sequence (A.P) is 26 and that of the next 4 term is 74. Find the common difference
Answers
Answered by
R_scott
4 a + 6 d = 26
4 a + 22 d = 74
subtract the equations (to eliminate a) , then solve for d
4 a + 22 d = 74
subtract the equations (to eliminate a) , then solve for d
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