beatrizvargas beatrizvargas

13-12-2014
Mathematics

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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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