решите уровнение у+12/6 = 26,299/25-z = 13

У +12/6 = 26
у + 2 = 26
у = 26 - 2
у = 24
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299 / (25 - z) = 13
13( 25 - z) = 299
325 - 13z = 299
13z = 325 - 299
13z = 26
    z = 2