laisha4 laisha4

19-10-2016
Mathematics

contestada

Twice the sum of a number and 4 is equal to 9

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frenchfry15 frenchfry15

19-10-2016

It could be 2.5+2.5=5 and then add that to 4 and that equals 9

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TheSMan TheSMan

19-10-2016

2x(4+n)=9
8 +2n = 9
2n = 9-8
2n = 1
n = 0.5

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