The sum of 6th and 7th terms of an AP is 39 and the common difference is 3, then the first term of AP is??
nayan1311:
first term is equal to 3
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a+5d+a+6d=39
2a+11d=39
2a+11(3)=39
2a+33=39
2a=6
a=3
Hope it helps you
2a+11d=39
2a+11(3)=39
2a+33=39
2a=6
a=3
Hope it helps you
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