cassandra4t cassandra4t
  • 01-09-2020
  • Mathematics
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Subtitution .HELP ME

Subtitution HELP ME class=

Respuesta :

KurdishPotato
KurdishPotato KurdishPotato
  • 01-09-2020

Answer:

x = 2

y = 3

Step-by-step explanation:

x = 3y - 4

5x + 2y = 31 in the second equation replace x with 3y - 4

5 (3y - 4 ) + 2y = 31 multiply 5 with inside the parenthesis

15y - 20 + 2y = 31 add like terms

17y = 51

y = 3

Now, since we found the value of y we can use it to calculate x

x = 3y - 4

x = 3×3 - 4

x = 2

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