Question 1200270
It is not written correctly.  You need another left-parenthes.  You at least should recognize that lowest common denominator is  12.


Depending on what you really have, grouping symbols may not matter.

{{{3/4-2/3+1/2+1/3}}}

{{{(3/4)(3/3)-(2/3)(4/4)+(1/2)(6/6)+(1/3)(4/4)}}}

{{{(9-8+6+4)/12}}}

{{{9/12}}}

{{{3/4}}}