Question

Решите систему уравнения вас

Answer 1

$\left \{ {{6x+y=5} \atop {2x-3y=-5}} \right$

$\left \{ {{y=5-6x} \atop {2x-3(5-6x)=-5}} \right$

$\left \{ {{y=5-6x} \atop {2x-15+18x=-5}} \right$

$\left \{ {{y=5-6x} \atop {20x=-5+15}} \right$

$\left \{ {{y=5-6x} \atop {20x=10}} \right$

$\left \{ {{y=5-6x} \atop {x=10:20}} \right$

$\left \{ {{y=5-6x} \atop {x=0,5}} \right$

$\left \{ {{y=5-6\cdot 0,5} \atop {x=0,5}} \right$

$\left \{ {{y=5-3} \atop {x=0,5}} \right$

$\left \{ {{y=2} \atop {x=0,5}} \right$

ответ: (0,5; 2).

Answer 2

6x+y=5 -> y=5-6x

2x-3(5-6x)=-5

2x-15+18x=-5

20x=10

x=1/2

y=5-6(1/2) -> y=2