Resposta :

\/20 = \/(4x5) = 2\/5

\/180 = \/2x90 = \/4x45 = 2\/45 = 2\/9x5 = 2x3\/5 = 6\/5

 

4.2\/5 + 6\/5 + 3\/12 + 2\/108 = 

8\/5 + 6\/5 + 3\/4x3 + 2\/4x3x9 =

14\/5 + 3.2\/3 + 2.2.3\/3 = 

14\/5 + 6\/3 +12\/3 = 

14\/5 + 18\/3

 

 

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