SOLUTION: B= a + (n-1)d, for d.

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Question 763412: B= a + (n-1)d, for d.
Answer by tommyt3rd(5050) About Me  (Show Source):
You can put this solution on YOUR website!
B= a + (n-1)d

B-a=(n-1)d

d= (B-a)/(n-1)

:)