eliseva
eliseva eliseva
  • 24-01-2021
  • Mathematics
contestada

HELP ASAP

Solve the system of equations
X + 3y = -20 and -4x - 4y=0 by combining the equations

Respuesta :

LuisaSosa
LuisaSosa LuisaSosa
  • 24-01-2021

Answer:

x=10 and y=-10

Step-by-step explanation:

first pick for what you want to solve for first, in this case I picked y

so I put them for subtraction and i hade to multiply the first equation by 4 so I could cancel my X's and I just solved for y

then I plugged in my answer to the first equation, you can pick any of the 2 equations, and I solved for x

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