PEMDAS stands for Parentheses, Exponents, Multiply, Divide (multiplying and dividing are done from left to right, so if division is on the left of multiplying it can be done first), Add, and Subtract (add and subtract done left to right)
Your problem is 90/9(8-3x2).
There is a problem in parentheses! We'll do that first.
Multiplication is done before subtraction, so 3*2=6. Then, 8-6=2. Parentheses done.
the 9(2) we've got with is multiplication. There's division (90/9), so we'll do that first.
10*2 (the * can be used for multiplication) is 20.
Hope I answered your question! Math can be tricky, and it's good to reach out for help!