wevkhh44 wevkhh44
  • 16-03-2021
  • Mathematics
contestada

6
Solve the system of equations.
-3x +y = 2
70 – 8y = 1
Solution:
y =

6 Solve the system of equations 3x y 2 70 8y 1 Solution y class=

Respuesta :

cwrw238 cwrw238
  • 16-03-2021

Answer:

x = -1, y = -1.

Step-by-step explanation:

-3x +y = 2

7x – 8y = 1

We can use the  elimination method to solve these:

Multiply the first equation by 8:

-24x + 8y = 16

Now add this to the second equation:

-17x -8y + 8y = 17

-17x = 17

x = -1.

Plug x = -1 into the first equation:

-3(-1) + y = 2

3 + y = 2

y = -1.

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