10 2/3 :8/9-6,8=?

5 1/3 :2 2/9+0.6=?

(2,25 + 1 5/6)*6/7-0,5=?

(9,2 - 3 3/4):2,5 + 0.82=?

10 23:89-6,8=5,2                    5 13:2 29+0,6=3

1)10 23:89=323*98=12          1)5 13:2 29=163*920=4820=2,4

2)12-6,8=5,2                             2)2,4+0,6=3

(2,25+1 56)*67-0,5=3                              

1)2 25100+1 56=3 325300

2)3 325300*67=1225300*67=17550=3,5

3)3,5-0,5=3

(9,2-3 34):2,5+0,82=3

1)9,2-3 34=9,2-3,75=5,45

2)5,45:2,5=2,18

3)2,18+0,82=3