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OpenStudy (anonymous):
Which value of x satisfies both 3x + y = 9 and 3x − 5y = 15?
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OpenStudy (anonymous):
@g17
OpenStudy (anonymous):
OpenStudy (anonymous):
3x+y=9 y=9-3x put this value in other equation
OpenStudy (anonymous):
3x-5(9-3x)=15 3x-45+15x=15 18x=15+45=60 x=60/18=10/3
OpenStudy (anonymous):
y=9-3*10/3=9-10=-1
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OpenStudy (anonymous):
x=10/3 satisfy
OpenStudy (anonymous):
thanks
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