in an AP , if the common difference (d) = -4 and the seventh form (a7) is 4, then find the first term
Answers
Answered by
14
a = ? d =-4
a7 = a + 6d
a + (-4)6 =4
a -24 =4
a =28
a7 = a + 6d
a + (-4)6 =4
a -24 =4
a =28
Answered by
6
D= -4
a7= 4
we can write a7 in this form a7= a+6d= 4
putting value
a+6×(-4)=4
a= -28
a7= 4
we can write a7 in this form a7= a+6d= 4
putting value
a+6×(-4)=4
a= -28
Similar questions