Question

Даю √100 баллов!!! -50% за публикацию). Алгебра 8 класс, помогите
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Answer 1

$frac{ {x}^{2} + 3x }{5} = frac{5x - {x}^{2} }{2} \ 2( {x}^{2} + 3x) = 5(5x - {x}^{2} ) \ 2 ( {x}^{2} + 3x) - 5(5x - {x}^{2} ) = 0 \ 2 {x}^{2} + 6x - 25x + 5 {x}^{2} = 0 \ 7 {x}^{2} - 19x = 0 \ x(7x - 19) = 0 \ \ x_{1} = 0 \ \ 7x - 19 = 0 \ 7x = 19 \ x = frac{19}{7} \ x_{2} = 2 frac{5}{7}$