21-02-2016
Mathematics

contestada

nine fever than half a number is five more than four times the number

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lekhagummalla lekhagummalla

21-02-2016

9-1a/2 = 5+4a
-5         -5

4-1a/2 = 4a
  +1a/2   +1a/2

4 = 9a/2
*2   *2

8 = 9a
/9   /9

8/9 = a

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