1) 53,764,248-1,56 х)+3,8=55 2) (2,7 у +3,08 у): 1,7-3,08=12,22

53,764,248-1,56 х)+3,8=5553,764,248-1,56 х)=55-3,853,764,248-1,56 х)=51,24,248-1,56 х=53,76:51,24,248-1,56 х=1,051,56 х=4,248-1,051,56 х=3,198 х=3,198:1,56 х=2,05=(2,7 у +3,08 у): 1,7-3,08=12,22 5,78 у: 1,7=12,22+3,085,78 у: 1,7=15,35,78 у=1,7*15,35,78 у=26,01 у=26,01:5,78 у=4,5