First you have to do the one in the bracket so that would be 9. Now its 3+6x9 divide by 3-7 then do the multiplication and you will get 54. Now its 3+54 divided by 3-7. Now do the division and you’ll get 18. Now its 3+18-7 then add 3+18 which is 21 then subtract 7 which is 14