If 7th term of an AP is -4 and 13th term is -16. Find the AP.
(Best explanation will get brainliest)
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Step-by-step explanation:
A7 = -4 = a+6D ---------(1)
A13= -16=a+ 12D --------(2)
subtract eq 1 and 2
a +6 D = -4
a +12D = -16
- - +
-------------------
-6D = 12
D = -2
a + 6D = -4
a+ 6(-2)=-4
a -12=-4
a= -4 +12
a= 8
a2 = a +D = 8+(-2)=6
a3= a+2D =8+2(-2)= 8-4 =4
therefore Ap r u follow
8 ,6,4,..........
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