Find the sum of three consecutive odd integers if the sum of the first two integers is equal to twenty-four less than four times the third integer

Solve: 3x+y=6 4x-2y=18 show all work !

Pepe and leo deposits money into their savings account at the end of the month the table shows the account balances. if there pattern of savings continue and neither earns interest nor withdraw any of the money , how will the balance compare after a very long time ?

Having a hard time understanding this question (see attachment).