Question

6TH TERM OF AN AP IS -20.SUM OF 6 TERMS IS -30.FIND THE FIRST TERM AND
COMMON DIFFERENCE

Answer 1

Answer:

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Step-by-step explanation:

Sn = ½ × n ( a + l)

-30 = 6/2 × ( a - 20)

-10 = a - 20

a = 10

t6 = a + 5d

-20 = 10 + 5d

-30 = 5d

d = -6