ThatSmartGilaMonster ThatSmartGilaMonster

12-12-2021
Mathematics

contestada

Solve the system of equations -x+ 2y = –11 and 5x – 8y = 39 by
combining the equations.

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Yang100 Yang100

12-12-2021

Answer:

x=-5, y=-8. (-5, -8).

Step-by-step explanation:

-x+2y=-11

5x-8y=39

---------------

5(-x+2y)=5(-11)

5x-8y=39

---------------------

-5x+10y=-55

5x-8y=39

--------------------

2y=-16

y=-16/2

y=-8

-x+2(-8)=-11

-x-16=-11

-x=-11+16

-x=5

x=-5

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