a)10/5-6/6+18/9=2/1-1/1+2/1=2-1+2=3
b(1/3+1/2+3/5-2/3+1/10)×0+1/4+=(2/6+3/6+9/15-6/15+1/10)×0+1/4=(5/6+3/15+1/10)×0/1+1/4=33/30+1/4=11/10+1/4=22/20+5/20=27/20
c(1/1+4/2+9/3)-8/8=(1/1+2/1+3/1)-1/1=6/1-1/1=5/1=5
Sper ca te-am ajutat
