lindsayxavier07 lindsayxavier07
  • 16-12-2020
  • Mathematics
contestada

y=5x-1
2x+y=13 how to solve​

Respuesta :

YuutoKatou
YuutoKatou YuutoKatou
  • 16-12-2020

Answer:

x = 2, y = 9 or (2,9)

Step-by-step explanation:

Hello!

The first equation "y = 5x - 1" is telling us that y is equal to 5x - 1

We can plug in the first equation into the second like this:

2x + y = 13 (we know y so we can plug it in)

2x + (5x - 1) = 13

2x + 5x - 1 = 13

7x - 1 = 13

Now we add 1 to both sides

7x - 1 + 1 = 13 + 1

7x = 14

x = 2

Now we plug in x to find y:

y = 5x - 1

y = 5(2) - 1

y = 10 - 1

y = 9

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