Question

Order of operation (4x5)-3

Answer 1

It would be using PEMDAS, "Parenthesis, Exponents, Multiplication, Division, Addition, and Subtraction" 

Since 4 x 5 is in parenthesis, you solve that first: (4x5)-3 => (20)-3 

Then subtract: 20-3 = 17

If you solve using the order of operations, you will get 17.

Answer 2

4 x 5 - 3

= 20-3

=17<answer