Question

A + d = -6 - a + 3d = -12 =

Answer 1

Answer:

$a + d = - 6.........1 \\ - a + 3d = - 12............2 \\ from \: equation \: 1and \: 2 \\ 4d = 18 \\ d = \frac{9}{2} \\ take \: tha \: d \: valu \: in \: equation \: 1 \\ a + \frac{9}{2} = - 6 \\ 2a + 9 = - 12 \\ 2a = 3 \\ a = \frac{3}{2}$

answer is that question by a u abhi