У-240.098=157.934 240.098+157.934=398.032
у=240.098+157.934
у=398.032
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398.032-240.098=157.934
157.394=157.394
195.200-z=58.060
z=195.200+58.060
z=137.140
-----------------------------------
195.200-137.140=58.060
58.060=58.060