tahararafique230
tahararafique230 tahararafique230
  • 02-09-2020
  • Mathematics
contestada

How many solutions does the system have?

2x+3y=6
-3x+5y=-15

Respuesta :

dannielle
dannielle dannielle
  • 02-09-2020

Answer:

one solution

Step-by-step explanation:

2x+3y=6      multiply this equation  with 3

-3x+5y=-15    multiply this equation  with 2

so

6x+9y=18

-6x+10y=-15

----------------------

add these equation

so 6x-6x+9y+10y=18-15

     19y=3

y=3/19

so 2x+3*3/19=6      multiply this equation  with 19

2x*19+9=6*19

38x+9=114

-9          -9

38x=105

x=105/38

   

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