Question

2x-y=-2 3x-3y=15 método gráfico

Answer 1

X=-7 and y=-12

Explanation:

Step solve 2x-y=-2 for y

2x-y+2x=-2+-2x(add -2x to both sides)

-y=-2x-2

-1 -1

Y=2x+2

Step: substitute 2x+2 for y in 3x-3y=15

3x-3(2x+2)=15

-3x-6=15 (simply both sides of the equation)

-3x-6+6=15+6 (add 6 to both sides)

-3x=21

-3 -3. (Divide both sides by -3)

X=-7