7938-14*а=35280:360
14*а=7938-98
14*а=7840
а=7840:14
а=560
х*32-123=3013
х*32=3013+123
х*32=3136
х=3136:32
х=98
с*210-900=12750
с*210=12750+900
с*210=13650
с=13650:210
с=65
4860-k*62=2442
k*62=4860-2442
k*62=2418
k=2418:62
k=39
91260-320*b=74620
320*b=91260-74620
320*b=16640
b=16640:320
b=52