Answer:
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.
There is no difference between evaluating 3 times 7-4 divided by 2 and evaluating 3 (7-4) divided by 2.
Three times of (7 - 4) = 3( 7 - 4)
= 3 (3) = 9
Divide by 2, [tex]=\frac{9}{2}=4.5[/tex]
Now solve expression,
[tex]\frac{3(7-4)}{2}=\frac{3*3}{2}=\frac{9}{2}=4.5[/tex]
Thus, There is no difference between evaluating 3 times 7-4 divided by 2 and evaluating 3 (7-4) divided by 2.
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