megannnw megannnw
  • 18-10-2017
  • Mathematics
contestada

find x and y
x+y=5
x=y+7

Respuesta :

musiclover10045
musiclover10045 musiclover10045
  • 18-10-2017

1st equation: x +y =5

 2nd equation: x = y +7

replace x in 1st with 2nd

y +7 +y =5

2y+7 =5

2y =-2

y = -1

now replace y in 2nd with -1

x = -1 +7

x = 6

answer:

x = 6

y = -1

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