Resposta :

agenterj
4x - 1/3x = 187

4x/1 - 1x/3 = 187/1

(4x/1)/3 - (1x/3)/1 = (187/1)/3

12x -x = 561

11x = 561

x= 561/11

x= 51

Agora,a prova dos 9

51.4 - 51/3= 187

204 - 17 = 187 (ok)
carlamanuelemanuele
4x - 1/3x = 187

4x/1 - 1x/3 = 187/1

(4x/1)/3 - (1x/3)/1 = (187/1)/3

12x -x = 561

11x = 561

x= 561/11

x= 51

Agora,a prova dos 9

51.4 - 51/3= 187

204 - 17 = 187

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