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OpenStudy (anonymous):
solve this in substitution way 3x+2y=9 and -2y+y=4
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OpenStudy (anonymous):
have you solved the previous problem?
OpenStudy (anonymous):
yes.it actually work but finding LCD
OpenStudy (anonymous):
what LCD?
OpenStudy (anonymous):
-2y+y=4 -y=4 y=-4 3x+2(-4)=9 3x-8=9 3x=1 x=1/3
OpenStudy (anonymous):
OUR teacher said that we have to find the LCD (least common denominator )
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OpenStudy (anonymous):
Actually, you don't need to find any LCDs because first: there are no fractions to simplify then second, you can simply get the value of one variable and substitute it to the other. It's that simple.
OpenStudy (anonymous):
okey.thanks
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