у=5х-9
х=3, у=5*3-9=6
х=4,2; у=5*4,2-9=12
х=-3,4; у=5*(-3,4)-9=-26
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у=5х-9
х=3, у=5*3-9=6
х=4,2; у=5*4,2-9=12
х=-3,4; у=5*(-3,4)-9=-26