Răspuns:
174/20-69/10=174-2×69/20=174-138/20=36/20=9/5=1×1/5
(312-175+206)/100=343/100=3,43
625/1000×132/100:25/100=625/1000×132/100×100/25=(25×132)/1000=3300/1000=3,3
15/10+31/9-195/90=(9×15+31×10-195)/90=(135+310-195)/90=250/90=25/9=3×1/9
1/2+1/3×9/5=1/2+3/5=(5+6)/10=11/10=1,1
(2/3)³:(2/3)¹+(2017/2016)⁰=(2/3)³-¹+1=(2/3)²+1=4/9+1=(4+9)/9=13/9=un întreg 4/9
