remasteredaman remasteredaman
  • 06-02-2020
  • Mathematics
contestada

algebra
5x-2y=1
2x+y=4

Respuesta :

candy942
candy942 candy942
  • 06-02-2020

Answer:

(1,1)

Step-by-step explanation:

5x-2y=1

2x+y=4

Im gonna use substitution but you could also use elimination

2x+y=4

-2x     -2x

y=-2x+4

replace y in the first equation with the second equation

5x-2(-2x+4)=1

distribute -2

5x+4x-8=1

add

9x-8=1

   +8  +8

9x=9

divide both sides by 9

x=1

then put x in for the equation fo your choice im gonna use the second one

2(1)+y=4

2+y=4

-2    -2

y=1

Hope this helps :))

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