15-04-2014
Mathematics

contestada

How do you solve and check it
-5 - 5y =0
y=8x

Respuesta :

deathstrike001 deathstrike001

15-04-2014

-5-5y=0
y=8x

substitute the value of y
-5-5(8x)=0
-5-40x=0
add 5 to both sides.
-40x=5
divide both sides by -40
x=-5/40
simplify gcf=5
x=-1/8

checking:
Y=8x
y=8(-1/8)
y=-1
Substitute it to the 1st equation
-5-5(-1)=0
-5+5=0
0=0

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