Вычислите:7.5/0.6-2.5
(68:2 5/6-42*0.1):1.1
2/3*0.375+2.68:0.8
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68:2х5\6=68:2х6+5\6=68:17\6=24
42х0.1=4.2
24-4.2=19.8
19.8\1.1=18
2\3х0.375=0.25
2.68\0.8=3.35
0.25+3.35=3.6
18\3.6=5
10\5=2