irami24 irami24
  • 16-02-2021
  • Mathematics
contestada

Solve the system of equations -5x – 2y = 13 and 3x-y = 12 by combining the equations

Respuesta :

nsiyanda92
nsiyanda92 nsiyanda92
  • 18-02-2021

Answer:

x=1 y =15

Step-by-step explanation:

hopefully correct

-5x-2y=13 (i)

3x-y=12

-y=12-3x

y=-12+3x (ii)

substitute ii into i

-5x-2(-12+3x)=13

-5x +24-6x=13

-11x=-11

x=1

substitute x into ii

y=-12+3(1)

y=15

.

. . x=1 and y =15

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