5x+4y=10 5x-3y=3 система уравнений

5х + 4y = 10 5x - 3y = 3 ••••••••••••- 5x - 4y = - 10 - 5x + 5x - 4y - 3y = - 10 + 3 - 7y = - 7 y = 1 5x + 4 = 10 5x = 6 X = 1,2 Ответ ( 1,2 ; 1 )