Question

The common difference of an Ap is 4.
Sum of Ist 8 terms of this Ap =
Sum of the next 7 terms.
Find First term of the AP.​

Answer 1

Step-by-step explanation:

d = 4

8a + (1+2+3+4+5+6+7)d = 7a + (8+9+10+11+12+13+14)d

8a + 28d = 7a + 77d

a = -49d = -49(4) = -196

Answer 2

d=4

Given

@1+@2+@3+@4+@5+@6+@7+@8=@9+@10+@11+@12+@13+@14+@15

@+@+d+@+2d+@+3d+@+4d+@+5d+@+6d+@+7d=@+8d+@+9d+@+10d+@+11d+@+12d+@+13d+@+14d

8@+28d=7@+77d

8@-7@=77d-28d

@=49d

@=49(4)

@=196

First term =196

Hope it helps

Mark it as brainliest if you are satisfied with the answer