chxrmeee
chxrmeee chxrmeee
  • 17-01-2022
  • Mathematics
contestada

What is the value X?

If 5x + 4y = 23, AND 3x - y = 7

Respuesta :

iciclepiano18
iciclepiano18 iciclepiano18
  • 17-01-2022

Answer:

x=3

Step-by-step explanation:

We can set up a system of equations:

5x+4y=23

3x-y=7

We can isolate y in the second equation:

-y=7-3x

y=3x-7

Then we can solve using substitution:

5x+4(3x-7)=23

Distribute

5x+12x-28=23

17x=51

Divide both sides by 17

x=3

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