Answer:
30
Step-by-step explanation:
an=a+(n-1)d
a18=a+17d (1)
a8=a+7d (2)
Subtracting (2) from (1)
a18-a8=10d
d=3
10d=30
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Answers & Comments
Answer:
30
Step-by-step explanation:
an=a+(n-1)d
a18=a+17d (1)
a8=a+7d (2)
Subtracting (2) from (1)
a18-a8=10d
d=3
10d=30
Hello ( ・∀・)( ・∀・)( ・ิω・ิ)( ・ิω・ิ)