If common difference of an ap is -4 and seventh term of an ap is 4 find the first term of an ap

If common difference of an ap is -4 and seventh term of an ap is 4 fin

1.	If common difference of an ap is -4 and seventh term of an ap is 4 find the first term of an ap
Answer» A=28 d=-4 a7=4. a+6d=4 a=4-6(-4)a= 4+24=28 28