connor6402 connor6402

11-10-2019
Mathematics

contestada

Solve the system.
x+3y=7
2x-4y=24

Respuesta :

gutierrezmpx gutierrezmpx

11-10-2019

Answer:

y= -1 and x = 10

Step-by-step explanation:

(1) x+3y=7

(2) 2x-4y=24

Clear x from the 1st equation: x=7-3y

And replace x from the 2do one: 2(7-3y)-4y=24

14-6y-4y=24

-6y-4y=24-14

-10y=10

y=-10/10

y=-1

Now we have y=-1, let's finde x:

x=7-3y

x=7-3(-1)

x=7+3

x=10

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