In an a.p if the common difference is -4 and the 7th term is 4 then find the first term

In an a.p if the common difference is -4 and the 7th term is 4 then fi

1.	In an a.p if the common difference is -4 and the 7th term is 4 then find the first term
Answer» d=-47th =a+6da+6d=4a+6(-4)=4a-24=4a=28 a=28 T7=a +6d =4=a+6.-4=4=a-24=4a=28