Step-by-step explanation:

Not sure but my math instincts tell me to allign the equation to be in the same positions by transposition

Solving them vertically

(x+2x = 3x)

(3y - 3y = 0)

(-13+10 = -3)

Answer

Yay! You got x! now go apply it to either equations to get the value of y.

Either ways:

Final Answer

x=-1

y=-4