No, 1/8 is smaller because 2/10 is equivalent to 1/5 and 1/5 is larger than 1/8.
Yes simplify all you have to do or add like terms ex. 4x+3x
1/3+5/12=4/12+5/12=9/12=3/4 of guests choose meat
1-3/4=1/4 of guests are vegetarians
so
23 guests is 1/4 of all guests
23*4=92 all guests