The sum of first 9 term of an ap is 351 and the first 20 term is 1770 find +he first term

The sum of first 9 term of an ap is 351 and the first 20 term is 1770

1.	The sum of first 9 term of an ap is 351 and the first 20 term is 1770 find +he first term
Answer» Make two equation Easy h ..try once more Form two eq nd get vulue of a