the. svententh. term. of. ap. exceds. its. 10th. term. by7. find. the. common. adifference
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formula
tn =a+(n-1)d
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tn =a+(n-1)d
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seventh term= a+6d
tenth term= a+9d
give a+6d+7=a+9d
7=3d
d=7/3
tenth term= a+9d
give a+6d+7=a+9d
7=3d
d=7/3
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