X*56-1234=2294. 50*x+3407=60757. (y+819)*72=86832. z*2-27*54=2856:21

X*56-1234=2294 56х=2294+1234 56х=3528 х=3528/56 х=63 50*x+3407=60757 50х=60757-3407 50х=57350 х=57350/50 х=1147 (y+819)*72=86832 у+819=86832/72 у+819=1206 у=1206-819 у=387 z*2-27*54=2856:21 2z - 1458=136 2z=136+1458 2z=1594 z=1594/2 z=797