Question

find a30 - a20
for -9,-14, -19, -24 ...​

Answer 1

Answer:

-45

Step-by-step explanation:

Here, a = -9

d = -5

a30 - a20 = (a+29d)-(a+19d)

= a+29d-a-19d

= 9d

= 9×(-5)

= -45

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