beatrizvargas
beatrizvargas
13-12-2014
Mathematics
contestada
What is (2n + 20) + 60 = 90?
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faithhopecharity1
faithhopecharity1
13-12-2014
(2n +20) +60 = 90
-60 -60
2n+20= 30
-20 -20
2n=10
divide by two on both sides
n=5
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BMSumpy
BMSumpy
13-12-2014
2n+20+60=90 2n+80 =90 2n+80 =90 80 -80 2n =10 2 2 n =5
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