Asked by Emmanuel

the 4th term of an A.p is 8,the sum of first 12 terms is 126.Find the A.p
Answered by Emmanuel
Help me solve it out
Answered by oobleck
Just use the formulas you know, and what they have told you.
a+3d = 8
12/2 (2a+11d) = 126
Now just solve for a and d.
Answered by R_scott
a + 3 d = 8 ... 12 a + 36 d = 96

12 a + 66 d = 126

subtracting equations ... 30 d = 30

substitute back to find a
Answered by Glory
I don't understand pls
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