Three sets of a sum of a number and four are added to the sum of seven times the same number and thirteen

A) if $50000 is invested in a bank account that pays 9.3% of interest compounded on a six-monthly basis, how much money will be in the account after 3 and 12 years? b) if matusalen's father had put $2.0 in the bank when he was born and there, how long would matusalen have had to his death (969 years later) if the interest was 7% per year composed each month and weekly?

Write a fraction less than 1, which has a denominator of 6 and is greater than 3/4 plz answer !

Which of the following equations is equivalent to x/3-6/x=1