erikadaily2007 erikadaily2007
  • 11-02-2021
  • Mathematics
contestada

What is the answer to
-5 +2y = 9
y = 7x ?

Respuesta :

birronbaronbasdnaym
birronbaronbasdnaym birronbaronbasdnaym
  • 12-02-2021

Answer:

x = 1

y = 7

Step-by-step explanation:

Two equations, two unknowns. We know that y = 7x so we can substitute that into the first equation to get:

[tex]-5+2\left(7x\right)=9[/tex]

[tex]-5+14x=9[/tex]

[tex]14x=14[/tex]

This gives us x = 1.

Now plug this bag into either equation to find y, I will use the second since it's easier:

y = 7(1) = 7

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