You can put this solution on YOUR website! 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.
You can put this solution on YOUR website!
Hints:
Get each denominator to the LCD, which in this case is 12.
For instance we multiply top and bottom of 3/4 by 3 to get to 9/12
To see why something like 3/4 = 9/12 is the case, draw a circle and split it into quarters. Shade 3 of them to represent 3/4.
Then split each slice into 3 equal pieces. That gives 4*3 = 12 smaller slices total. 9 of which are shaded.
Similar situations occur for the other fractions.