Решите уравнение 1) [latex] \frac{2x}{5} [/latex] + [latex] \frac{x}{2} [/latex] = 9 2) [latex] \frac{4x}{5} [/latex] - [latex] \frac{x}{10} [/latex] = 7 3) [latex] \frac{2x}{3} [/latex] + [latex] \frac{5x}{2} [/latex] =19

1) [latex] \frac{2x}{5} + \frac{x}{2} = 9[/latex] 4x + 5x = 90 9x = 90 x = 10 2) [latex] \frac{4x}{5} - \frac{x}{10} = 7[/latex] 8x - x = 70 7x = 70 x = 10 3) [latex] \frac{2x}{3} + \frac{5x}{2} = 19[/latex] 4x + 15x = 114 19x = 114 x = 6 Удачи!