28-09-2017
Mathematics

contestada

Solve the system of linear equations in two variables by elimination or substitution.
3x+y=7
-2x-y=9

Respuesta :

shadowgirl890 shadowgirl890

28-09-2017

3x + y = 7
-2x-y=9

3x+y=7
y=-2x-9

3x-2x-9=7
x-9=7
x=16

Answer Link

JJLAFox JJLAFox

03-09-2020

Answer:

x=16, y=-41

Step-by-step explanation:

Answer Link

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