Nodia
Nodia
02-02-2015
Mathematics
contestada
2x -y=-1
3x-2y=1
elimination somebody do this for me
Respuesta :
Pandagirl
Pandagirl
02-02-2015
-2(2x-y)=-1
3x-2y=1
-4x+2y=2
3x-2y=1
-x=3 (x=-3)
(-3,__)
2(-3)-y=-1
-6-y=-1
-y=-1+6
-y=5
y=-5
so..(-3,-5)
Answer Link
logo88
logo88
02-02-2015
2x-y=-1 (1)
3x-2y=1 (2)
(1) * 2--> 4x-2y=-2 (3)
(3) - (2)
x= -3
sub x= -3 into (1)
2(-3)-y=-1
-6-y=-1
-y=5
y= -5
Answer Link
VER TODAS LAS RESPUESTAS ( 49+ )
Otras preguntas
what is the sum of 7/10 and 6/100
having troubles with inequalities.. 3.8x + 14.5 < 32
having troubles with inequalities.. 3.8x + 14.5 < 32
which trinomial is equivalent to (3x-1)(x+4)
what is the sum of 7/10 and 6/100
what is the sum of 7/10 and 6/100
Explain what is the same about two fractions that are like fractions
having troubles with inequalities.. 3.8x + 14.5 < 32
what is the sum of 7/10 and 6/100
having troubles with inequalities.. 3.8x + 14.5 < 32