answer this quesion early
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t3 + t7 =6
t3xt7 = 8
a+(n-1) d + a+ (n-1) d= 6
a+(3-1)d + a+(7-1)d =6
a+2d + a+6d = 6
2a + 8d =6
a+4d = 3____(1)
a +(n-1) d x a+(n-1) =6
a+ (3-1)d x a+ (7-1)d =6
a+2d x a+6d=6
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