Mathematics
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OpenStudy (anonymous):
LAST QUESTION:
Solve the system of equations
y=x-6
x+y=-2
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mathslover (mathslover):
\[\large{y=x-6}\]
\[\large{x+y=-2}\]
take first equation first
mathslover (mathslover):
that is we have y = x-6
mathslover (mathslover):
put this value of y in the second equation...
I mean to say that :
\[\large{x+y=-2}\]
\[\large{x+(x-6)=-2}\]
mathslover (mathslover):
can you do that further @Tutu ? what do you get for solving for x
OpenStudy (anonymous):
yeahh umm i dont understand what you tryna say.
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mathslover (mathslover):
oh k no problem
mathslover (mathslover):
I will explain u more
mathslover (mathslover):
given y = x-6
right?
OpenStudy (anonymous):
okay thanks
OpenStudy (anonymous):
yeah sure right
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mathslover (mathslover):
so the value of y is x-6
mathslover (mathslover):
right?
OpenStudy (anonymous):
yeah
mathslover (mathslover):
oh k so in the second equation we have :
x+y= - 2
OpenStudy (anonymous):
right
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mathslover (mathslover):
now put this value of y = x-6 on the place of y in second equation
\[\large{x+y=-2}\]
\[\large{x+(x-6)=-2}\]
mathslover (mathslover):
got my point now?
OpenStudy (anonymous):
ohh okay i see
mathslover (mathslover):
so we have :
\[\large{x+x-6=-2}\]
\[\large{2x-6=-2}\]
right?
OpenStudy (anonymous):
yeah thats right
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mathslover (mathslover):
add 6 both sides what do you get? :
\[\large{2x-6+6=-2+6}\]
OpenStudy (anonymous):
4
OpenStudy (anonymous):
x=2
mathslover (mathslover):
right
mathslover (mathslover):
good work
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OpenStudy (anonymous):
:)) Thanks i actually learned how to do that
mathslover (mathslover):
now we had : y = x-6
put the value of x = 2
mathslover (mathslover):
y = 2-6 = -4
mathslover (mathslover):
No problem and best of luck
OpenStudy (anonymous):
so what will be the final answer?
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mathslover (mathslover):
y = -4 and x = 2
OpenStudy (anonymous):
oh yeah thanks again :)
mathslover (mathslover):
np :)