Asked by Oga Buhari

the fourth term if an A.p is 65 and its seventh term is 80 what is the sum of it's first term a and common difference b,?

Answers

Answered by R_scott
in other words, what's the 2nd term?

three CD's from 65 is 80 ...CD = (80 - 65) / 3

65 is the 4th term ... the 2nd term is two CD's less
Answered by clement
a+3b=65
a+6b=80

3b=15
b=5

what is a
get the value of a
and then say (a+b)=?

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