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[tex]\left \{ {{7^x-5^\frac{y}{2} =1776} \atop {7^\frac{x}{2}-5^\frac{y}{4} =24}} \right.[/tex]
[tex]\left \{ {{7^x-5^\frac{y}{2} =1776} \atop {7^\frac{x}{2}-5^\frac{y}{4} =24}} \right.[/tex]
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Замена переменной:
О т в е т. (4;8)