Question

2x+2y = -10 y 3x+2y=15​

Answer 1

SOLUCIÓN

♛ HØlα!! ✌

Si lo que nos piden es resolver, entonces lo haremos por sustitución

                           $Despejaremos\:x\:de\:la\:primera\:ecuacion\\\\2x+2y=-10\\\\\\2x=-10-2y\\\\\\x=\dfrac{-10-2y}{2}\\\\\\Reemplazamos\:x\:en\:la\:segunda\:ecuacion\\\\\\3x+2y=15\\\\\\(3)\left(\dfrac{-10-2y}{2}\right)+2y=15\\\\\\\dfrac{(3)(-10-2y)+((2)(2y))}{2}=15\\\\\\(-30-6y)+(4y)=(15)(2)\\\\\\-30-2y=30\\\\\\-2y=60\\\\\\y=\dfrac{60}{-2}\\\\\\\boxed{\boldsymbol{y=-30}}$

                        $Reemplazamos\:y\:en\:x\\\\\\x=\dfrac{-10-2y}{2}\\\\\\x=\dfrac{-10-2(-30)}{2}\\\\\\x=\dfrac{-10+60}{2}\\\\\\x=\dfrac{50}{2}\\\\\\\boxed{\boldsymbol{x=25}}$