(25-а)*7=63 400:b-32=48 250+9*c=520
25-а=63/7 400:b=48+32 9*c=520-250
25-а=9 400:b=80 9*c=270
а=25-9 b=400/80 c=270/9
а=16 b=50 c=30
(25-16)*7=63 400/50-32=48 250+9*30=520
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400:б-32=4. 250+9с=520
(25-а)*7=63. 400б-32=4. 9с=520-250
7а-7*25=63. 400б=32+4. 9с=270
7а-175=63. 400б=400:36. с=270:9
7а=175+63. 400б=11. с=30
7а=238
а=238:7
а=34
кажеться так)
(25-а)*7=63 400:b-32=48 250+9*c=520
25-а=63/7 400:b=48+32 9*c=520-250
25-а=9 400:b=80 9*c=270
а=25-9 b=400/80 c=270/9
а=16 b=50 c=30
(25-16)*7=63 400/50-32=48 250+9*30=520