jennyGx
jennyGx
05-08-2017
Mathematics
contestada
HELP Please THANKS (:
Respuesta :
kphung76127
kphung76127
05-08-2017
x+y=10
-x+y=-6
2y=4
y=2
x+4=10
x=8
Final answer: D
Answer Link
apologiabiology
apologiabiology
05-08-2017
subsitution
y=x-6
subsitute x-6 for y in the other equation
x+y=10
subsitute x-6 for y
x+x-6=10
combine like terms
2x-6=10
add 6 both sides
2x=16
divide by 2
x=8
sub back
y=x-6
y=8-6
y=2
x=8
y=2
(x,y)
(8,2)
D is answer
Answer Link
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