Question

Given the third term of an arithmetic sequence less than the fourth term by three. The seventh term is two times the fifth term. Find the common difference and the first term.
since the terms have a constant difference, the difference is 3.

a+6*3 = 2(a+4*3)
a+18 = 2a+24
a = -6

sequence is -6,-3,0,3,6,9,12,15,18,21,24
T7 = 12 = 2*6 = 2T5
I CANT GET IT. PLS LIST DOWN ALL THE SOLUTIONS ONE BY ONE. SO THAT I CAN UNDERSTAND. THANK YOU SO MUCH!!!
ANYONE? PLS HELP ME! MY FRIEND A.K.A MY ROOMATE NEED TO SOLVE THIS QUEST ASAP. THANKYOUUUUUU 😘

Related Questions

If the 16th term of an arithmetic sequence is three times the fourth term, find the ratio of the 23r... The fourth term of an arithmetic sequence is less than the fifth term by 3. The seventh term is thre... The first term in an arithmetic sequence is -1. The fourth term in the sequence is -4. The tenth ter...