[tex]12.5 \times ( \frac{4}{5} x - \frac{1}{15} y) - 3.15(2 \frac{2}{9} x + 1 \frac{3}{7} y) \\ \frac{25}{2} \times ( \frac{4}{5} x - 15y) - \frac{63}{20} \times ( \frac{20}{9} x + \frac{10}{7} y) \\ 10x - \frac{5}{6} y - 7x - \frac{9}{2} y \\ 3x - \frac{16}{3} y \\ - \frac{16}{3} y[/tex]
Ответ:
3х - 5 1/3у
Пошаговое объяснение:
12,5×(4/5х-1/15у) - 3,15(2 2/9х+1 3/7у) =
25/2×(4/5х-1/15у) - 63/20(20/9х+10/7у) =
10х - 5/6у - 7х - 9/2у = 3х - 5/6у - 27/6у = 3х - 32/6у = 3х - 5 1/3у
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[tex]12.5 \times ( \frac{4}{5} x - \frac{1}{15} y) - 3.15(2 \frac{2}{9} x + 1 \frac{3}{7} y) \\ \frac{25}{2} \times ( \frac{4}{5} x - 15y) - \frac{63}{20} \times ( \frac{20}{9} x + \frac{10}{7} y) \\ 10x - \frac{5}{6} y - 7x - \frac{9}{2} y \\ 3x - \frac{16}{3} y \\ - \frac{16}{3} y[/tex]
Ответ:
3х - 5 1/3у
Пошаговое объяснение:
12,5×(4/5х-1/15у) - 3,15(2 2/9х+1 3/7у) =
25/2×(4/5х-1/15у) - 63/20(20/9х+10/7у) =
10х - 5/6у - 7х - 9/2у = 3х - 5/6у - 27/6у = 3х - 32/6у = 3х - 5 1/3у