Question

In an AP,if common difference (d)=-4,and the seventh term=(a7)is4 then find the first term

Answer 1

Answer:

d=-4

a7=4

a?

a+6d=4

a+6×(-4)=4

a-24=4

a=4+24

a=28

Answer 2

$\bold\pink{GivEn:-}$

★ Common diffrence (d) :- -4

★ 7th term (a7) :- 4

$\bold\pink{To \ find:-}$

★ 1st term (a) :- ?

→ Then,

a7 = a + 6d

4 = a + (-24)

4 + 24 = a

$\large\bold{\underline{\boxed{\sf{\red{28 = a}}}}}$

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