AC : CB = 7 : 1
Пусть СВ = х, тогда АС = 7х.
7х + х = 240
8х = 240 I : 8
x = 30
CB = 30
AC = 30 · 7 = 210
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AC : CB = 7 : 1
Пусть СВ = х, тогда АС = 7х.
7х + х = 240
8х = 240 I : 8
x = 30
CB = 30
AC = 30 · 7 = 210