Question

for what value of n, are the nth terms of two APs : 60,62,64...... and - 10,-3,4,11..... equal?

Answer 1

given
An = an
A+(n-1)D = a+(n-1)d
60 + (n-1)2 = -10 +(n-1)7
70 +2n - 2 = 7n - 7
65 = 5n
n =13