Question

If a=3/4,b=-1/2 and c=1/2 verify (i) a+b=b+a (ii)a+c=c+a (iii) (a+b)+c=a+(b+c)

Answer 1

i→LHS=3/4+(-1/2)=1/4
RHS=-1/2+3/4=1/4

ii→LHS=3/4+1/2=5/4
RHS=1/2+3/4=5/4

LHS=(3/4-1/2)+1/2=1/4+1/2=3/4
RHS=3/4+(1/2-1/2)=3/4+0=3/4

As in all cases LHS=RHS
So your question is done✅✅✅✅✅✅