vgutierrez01 vgutierrez01

01-12-2020
Mathematics

contestada

Question 6 (1 point)
What is the solution to the systems of equations below?
4x - y = 20
-2x - 2y = 10
Blank 1:

Respuesta :

2307391 2307391

01-12-2020

Answer:

y=-8 and x =3

Step-by-step explanation:

4x - y = 20 and -2x - 2y = 10

if we multiply the second equation by -2 we have:

4x + 4y = -20 and 4x - y = 20

we subtract the two equations and we have

5y = -40 so y=-8 which means x= 3

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