keon1988
keon1988
09-05-2017
Mathematics
contestada
Substitution:
y=6x-11
-2x-3y=-7
Respuesta :
apologiabiology
apologiabiology
09-05-2017
y=6x-11
subsitute 6x-11 for y in other equation
-2x-3(6x-11)=-7
distribute
-2x-18x+33=-7
-20x+33=-7
minus 33 both sides
-20x=-40
divide both sides by -20
x=2
sub back
y=6x-11
y=6(2)-11
y=12-11
y=1
(x,y)
(2,1)
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