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OpenStudy (anonymous):
if 2x+y=20. what is the value of 6x+3y?
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OpenStudy (anonymous):
2x+y=20 -y -y 2x=20 x=10 6(10)+3y-3y 60=-3y -20=y I tried
OpenStudy (dls):
2x+y=20 6x+3y=? Simply multiply first equation by 3.
OpenStudy (mathstudent55):
Notice that 6x + 3y = 3(2x + y) You are given that 3x + y = 20, so just substitute 20 for 3x + y.
OpenStudy (cggurumanjunath):
2x+y=20 6x+3y=? Simply multiply first equation by 3.
OpenStudy (cggurumanjunath):
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