СВ=4х
АС=3х
АВ=3х+4х=7х
АС/АВ=3х/7х=3/7
3 на 7.............................
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СВ=4х
АС=3х
АВ=3х+4х=7х
АС/АВ=3х/7х=3/7
3 на 7.............................