Question

If the common
difference of an AP is -2
then a30 - a12 is equal
to​

Answer 1

Answer:

a30 = a+(29 (-2))

a20 = a+(11 (-2))

then ,

a30 -a12

= a +(-58) - ( a + (-22))

= a-a -58 +22

= -58 +22

= -36