178,5/x=21 у+27y=0,952 2,7x-1,3x+3,6x=2

178,5х=21          у+27у=0,952          2,7х-1,3х+3,6х=2
х=178,5/21          28у=0,952             5х=2 
х=8,5                    у=0,034               х=2/5 
                                                       х=0,4