Ответ:\(64{,}64-6{,}464-57{,}994=0{,}182\);\(63-0{,}99-62{,}01=0\);\(90{,}09-8{,}8-81{,}29=0\);\(7{,}54-5{,}74-1{,}8=0\);\(4{,}2-3{,}71-0{,}49=0\);\(6{,}2007-3{,}499-2{,}7017=0\).