annacantu4 annacantu4
  • 29-03-2017
  • Mathematics
contestada

3x-5y=10
-3x-4y=35
Find the Solution set . Solve the system using addition method ?

Respuesta :

ghanami
ghanami ghanami
  • 29-03-2017
Hello: 
3x-5y=10 .... (1)
-3x-4y=35 ..... (2) 
using addition method (1)+(2) :-9y=45        y=-6
subst in (1) :  3x-5(-6)=10
3x=40
 x=40/3
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