Question

The common difference of the AP whose nth term is tn = 4-7n is --------------​

Answer 1

Answer:

a+7n-4

1-n

Step-by-step explanation:

tn = a+(n-1)d .

4-7n = a+ (n-1)d

-(n-1)d = a- (4-7n)

d(1-n) = a - 4 +7n

d = a + 7n -4

1-n