daytyler242 daytyler242

24-06-2020
Mathematics

contestada

Solve the system using elimination. 3x + y = 27 –3x + 4y = –42

Respuesta :

osikbro osikbro

24-06-2020

Answer:

x=10, y=-3

Step-by-step explanation:

3x+y=27

-3x+4y=-42

Add the two equations together:

5y=-15

Divide both sides by 5:

y=-3

Plug this back into one of the original equations to solve for x:

3x-3=27

3x=30

x=10

Hope this helps!

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