Asked by triz

the fifth term of an arithmetic progression is 19,and the fourteenth term is 55. Find its first term

Answered by Reiny
"the fifth term of an arithmetic progression is 19"
----> a+4d = 19
" the fourteenth term is 55"
----> a+13d=55

subtract the two equations:
9d = 36
d = 4

in a+13d = 55
a + 13(4) = 55
a = 3
Answered by Yetunde
Correct
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