Question

in an ap d=20 find t7-t5

Answer 1

Step-by-step explanation:

d = 20

t7 = a + 6d = a + 6(20) = a + 120

t5 = a + 4d = a + 4(20) = a + 80

t7 - t5 = a + 120 - ( a + 80 )

t7 - t5 = a + 120 - a - 80

t7 - t5 = 40.....

Answer 2

Answer:

Step-by-step explanation:

$\underline\boxed\huge\boxed{ANSWER}$

→$in \:an\:ap\:d=5$

→$a+(n-1)d$

→$t_{7}=a+6d\\t_{5}=a+4d$║

→$t_{2}=a+40$

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