419037 419037
  • 02-04-2021
  • Mathematics
contestada

how to solve x=7y+3 and 9y-x=1 using subsituation method and showing work.

Respuesta :

s28045292
s28045292 s28045292
  • 02-04-2021

Answer:

x = 25/2

y = 3/2

Step-by-step explanation:

x = 7y + 3

9y - x = 1

9y- (7y + 3) = 0

2y - 3 = 0

2y = 3

y = 3/2

9(3/2) - x = 1

27/2 - x = 1

-x = -25/2

x = 25/2

Answer Link
Yang100
Yang100 Yang100
  • 02-04-2021

Answer:

x=17, y=2. (17, 2).

Step-by-step explanation:

x=7y+3

9y-x=1

----------

9y-(7y+3)=1

9y-7y-3=1

2y-3=1

2y=1+3

2y=4

y=4/2

y=2

x=7(2)+3

x=14+3

x=17

Answer Link

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