(4,25+6,57)-(4,49-2,57)-(3,51-1,75)=10,82-1,92-1,76=7,14
17,56+(9,28-5,56)-(7,01-4,72)=17,56+3,72-2,29=18,9
(14,7+0,053)-(9,7-2,31)-(1,01-0,047)=14,753-7,39-0,963=6,4
