alissonchan
alissonchan alissonchan
  • 10-12-2020
  • Mathematics
contestada

3x+5y=131 6x+2y=140

3x5y131 6x2y140 class=

Respuesta :

elcharly64
elcharly64 elcharly64
  • 10-12-2020

Answer:

x = 18.25

y = 15.25

Step-by-step explanation:

System of Equations:

Solve:

3x + 5y = 131      [1]

6x + 2y = 140     [2]

Multiplying [1] by -2:

-6x - 10y = -262      [3]

Adding [2] and [3]:

-8y = -122

y = -122/(-8)=15.25

y = 15.25

Substituting in [1]

3x + 5(15.25) = 131

3x + 76.25 = 131

3x = 54.75

x = 54.75/3

x = 18.25

Thus:

x = 18.25

y = 15.25

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