Question

In an AP, if the common difference = - 4 and the 7th term a7 is 4, then find the first term.

Answer 1

Answer:28

Step-by-step explanation:

t7=4 (given)

a+6d=4

d=-4

Substituting we get

a+6(-4)=4

a=4+24

a=28

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Answer 2

In an AP, if the common difference = - 4 and the 7th term a7 is 4, then find the first term.