scarletbride6921
scarletbride6921 scarletbride6921
  • 15-10-2021
  • Mathematics
contestada

What is x and what is y?
3x – 4y = –20
Y = 2x – 5

Help please no links

What is x and what is y 3x 4y 20 Y 2x 5 Help please no links class=

Respuesta :

KurdishPotato
KurdishPotato KurdishPotato
  • 16-10-2021

Answer:

x = 8

y = 11

Step-by-step explanation:

Replace the y in first equation with 2x - 5 since it's equal to it

3x - 4(2x - 5) = -20 multiply 4 with inside the parenthesis

3x - 8x + 20 = -20 add like terms

-5x + 20 = -20 subtract 20 from both sides

-5x = -40 divide both sides by -5

x = 8 now use this to find y

y = 2x - 5

y = 2*8 - 5

y = 11

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