Explain the diffrence between evaluating 3 times 7-4 divided by 2 and evaluating 3 (7-4)divided by 2

without parenthesis () the order of operations says that multiplication comes first. in the first one, you would multiply 3 times 7 and then subtract 4, then divide by 2. but in the second one, there are parentheses around 7-4, so you would subtract 4 from 7 first and THEN multiply by 3 then divide by 2.

your answer is 23/2 - 13.5

step-by-step explanation:

7/2 evaluates to

multiply x and 4.5

multiply x and 1

the x just gets copied along.

the answer is x

x

4.5*x evaluates to 4.5x

multiply 3 and 4.5x

multiply 1 and x

the x just gets copied along.

x

4.5*x*3 evaluates to 13.5x

7/2-4.5*x*3 evaluates to

  + 8 =

the answer is

7/2-4.5*x*3+8 evaluates to

b

step-by-step explanation: