х - скорость катера
S - пройденый путь
S = 5(x+2) = 6(x-2)
5x+10 = 6x-12
x = 22
S = 120
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х - скорость катера
S - пройденый путь
S = 5(x+2) = 6(x-2)
5x+10 = 6x-12
x = 22
S = 120