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

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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