AC+CB=1⇒ AC=1-CB
0,5AC=5/8 CB произведем замену
0,5*(1-СВ)=5/8СВ
0.5-0.5СВ=5/8СВ
0.5=5/8СВ+0.5СВ =5/8СВ+1/2СВ
0.5=9/8СВ
СВ=5/10 :9/8=5/10*8/9
СВ=40/90=4/9
АС=1-4/9=5/9
(1000-806)/х=97
194/х=97
х=194/97
х=2
(1000-806)/2=97
97=97
х+756/9=593
х+756=593*9
х+756=5337
х=5337-756
х=4581
4581+756/9=593
593=593
87396:215=406(ост.4) 152179:634=240(ост 19) 149135:346=431(ост 9)
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