Question

if sum of the 3rd and 8 th term of an ap is 7 and the sum of the 7th and 14th term is -3 find the 10th term
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Answer 1

Step-by-step explanation:

a3+a8=7

2a+9d=7.................................. 1

a7+a14=-3

2a+19d=-3...............................2

subtracting equation first and second

we get

d =-1

a=8

so 10th term is

a10 =a+9d= -1