Seudónimo
Seudónimo
01-06-2015
Mathematics
contestada
-3x-3y=3
5x+y=-17
What is the answer ?
Respuesta :
Panoyin
Panoyin
01-06-2015
-3x - 3y = 3 ⇒ -3x - 3y = 3
5x + 1y = -17 ⇒
-15x - 3y = 51
12x
=
-48
12 12
x = -4
5x + y = -17
5(-4) + y = -17
-20 + y = -17
+ 20 + 20
y = 3
(x, y) = (-4, 3)
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