Use order of operations and divide 8 by 2 and you get 4. Then use the PEMDAS (parentheses,exponents,multiplacation,division,addition, subtraction) method. Go left to right. And solve. :) I hope this helps
You follow the rules of order of operations multiplication and division the add or subtract in this case start from the left do 9 times 4 which is 36 then 8 divided by 2 times 4 once you get that then subtract those numbers hope that helps