Respuesta :

annalaw2020
okay so for elimination you must eliminate either the x or the y variable then plug it back into an equation

       2x+5y =20
+    -3x-10y = 37
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okay the easiest way would be multiplying the first equation by a 2 to cancel out the y's

      (2x+5y =20) 2
+    -3x-10y = 37
-------------------------------                             

        4x+10y =40
+    -3x-10y = 37
-------------------------------

the y's cancel out of the equation

        4x =40
+    -3x = 37
-------------------------------

now add

x = 77

now plug the x value into either equation

  2(77)+5y =20
 154 + 5y = 20
   5y = -134
   y = -26.8 

if you want to double check your answers plug back in your y and x values to check if the equation works 

x = 77 and y = -26.8 

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