a4=22 , a2 = 10 then a7 =
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a+7d=? a=? d=?
a+2d=10
a+4d=22
-2d=-12
d=6
a=?
a+4d=22
a+4(6)=22
a+24-22
a=2
a+7d
-2+7(6)
-2+42
=40
A7= 40
is a right answer
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