Question 662385: Find the first term from the given terms of the arithmetic sequence. _____, _______, ____, ____, 27, ____, ____, 42 / a1 = 7
Answer by MathLover1(20850)   (Show Source):
You can put this solution on YOUR website! since you are given _____, _______, ____, ____, 27, ____, ____, 42 /
 ...means you have first term already
To find any term of an arithmetic sequence:
where  is the first term of the sequence,  is the common difference,  is the number of the term to find
given:
so, you have a sequence where you just need to add  to each term to arrive at the next term
 ,  ,  ,  ,  ,  , , 
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