alexandra0904m
alexandra0904m
13-01-2016
Mathematics
contestada
5x+15y=10 5x-10y=-40
Respuesta :
Willchemistry
Willchemistry
13-01-2016
{ 5x + 15 y = 10
5x - 10 y = -40 * (-1)
{ 5 x + 15 y = 10
-5 x + 10 y = 40
------------------------
25 y = 50
y = 50 / 25
y = 2
For x :
5 x + 15 y = 10
5 x + 15*(2) = 10
5x + 30 = 10
5x = 10 - 30
5x = -20
x = -20 / 5
x = - 4
hope this helps!.
Answer Link
emmamoore0998
emmamoore0998
13-01-2016
5(2y-8)+15y=10= 25y=50= Y=2
x=2y-8 and Y= 2
X=2(2)-8=-4
(X,Y)= (-4,2)
Answer Link
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