Step-by-step explanation:
first term a = T1 = 15 common difference
D = 2nd term - 1st term .
d = 20- 15 = 5
check ✔ : t3 = 3rd term = t2+d
= 20 +5 = 25
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Step-by-step explanation:
first term a = T1 = 15 common difference
D = 2nd term - 1st term .
d = 20- 15 = 5
check ✔ : t3 = 3rd term = t2+d
= 20 +5 = 25