Найдите значение выражения:

[tex]а)3x + 5y,если \: \: x = 2 \frac{7}{15} \: \: и \: \: y = 3 \frac{1}{25} [/tex]

[tex]б)7 \frac{1}{4}x + 3 \frac{2}{9}y ,если \: \: x = 8 \: \: и \: \: y = 9[/tex]

[tex]в) \frac{3}{4} {x}^{2} + \frac{5}{6}y , если \: \: x = \frac{2}{3} \: \: и \: \: y = \frac{6}{7} [/tex]

[tex]г)4 \frac{7}{12} a + \frac{2}{3}b , если \: \: a = \frac{4}{11} и \: \: \: b = \frac{9}{16} [/tex]

Математика 6 класс​
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