Решите : 1) 11,875 - (12 1/6 - 11,6) 2) 2,104 - (4 3/125 - 2,12) 3)5,08 - 2 2/3 - 1 2/25 4)6 9/40 - 1,281 + 7/125

1) =11,875 - (12 1/6 - 11 3/5) = 11,875 - (12 5/30 - 11 18/30)= 11,875 - 17/18=11 7/8 - 17/18=11 63/72 - 68/72= 10 67/72
2) 2,104 - (4,024 - 2,12)= 2,104- 1,9=0,204
3) =5,08-1,08-2 2/3= 4-2 2/3= 1 1/3
4) 6,225-1,281+7,125=13,35-1,281=12,069