Seudónimo Seudónimo
  • 07-03-2021
  • Mathematics
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pls help will give brainlist

pls help will give brainlist class=

Respuesta :

thebecks
thebecks thebecks
  • 07-03-2021

Answer:

x = 3

y = 2

Step-by-step explanation:

5x + 4y= 23

x - y = 1   then x = y + 1

substitute for x:

5(y + 1) + 4y = 23

simplify:

9y = 18

y = 2

x = 2 + 1 = 3

check:

3-2 = 1

1 = 1

and:

5(3) + 4(2) = 23

23 = 23

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