Question

what is the common difference of the A.P., in which a 12 a 7 =84

Answer 1

ĀNSWĒR ⏬⏬

$a = 12 \\ a7 = 84 \\ a7 = a + 6d \\ 84 = 12 + 6d \\ 84 - 12 = 6d \\ 72 = 6d \\ d = \frac{72}{6} \\ = 12$
d= 12


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#Nishu HarYanvi ♥