5x+4y=10 5x-3y=3 система уравнений

Question

5x+4y=10 5x-3y=3 система уравнений

Answer 1

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 )