londonnn londonnn

19-06-2020
Mathematics

contestada

Solve the system of equations.

x + 3y = −1
2x + 2y = 6

(−4, 1)

(2, −1)

(4, −1)

(5, −2)

Respuesta :

bbooobb bbooobb

19-06-2020

Answer:

(5,-2)

Step-by-step explanation:

Multiplying the first equation by 2 we get

2x+6y=-2

Subtracting the second equation we get

4y=-8

y=-2

Plugging y as -2 into the equation we get x=5

Answer Link

mhanifa mhanifa

19-06-2020

Answer:

(5, -2)

Step-by-step explanation:

x + 3y = −1

2x + 2y = 6 ⇒ x+y=3

Subtract second equation from the first one:

x+3y=-1
x+y=3
3y-y= -1 -3
2y= -4
y= -2
x= 3+2= 5

Answer Link

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