Maryjmatha Maryjmatha

06-12-2016
Mathematics

contestada

Please help me with substitution! I'm terrible at it. :(
-3x+5y=-11
y=2x-5

Respuesta :

asianlove33224 asianlove33224

06-12-2016

-3x+ 5* 2x-5= -11
-3x+10x-5=-11
(-3x=10x=7)
7x-5=-6
(+5 on each end)
7x=-6
divide by 7

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