Question

The 6th terms of an ap is -10 and the 10th term is -26 find the 15th term?

Answer 1

T6=-10
T10=-26
T15=?

t6=-10
=>t+5d=-10

t10=-26
=>t+9d=-26

Solving by elimination method, we get,
d=-4
t=10

t15=-46