Respostas

2014-07-13T13:00:05-03:00
 \frac{1}{2}x+\frac{3}{4} =  \frac{4}{3}x + \frac{1}{3} \\  \\  
 \frac{1}{2}x-\frac{4}{3}x = - \frac{3}{4} + \frac{1}{3} mmc\\  \\ 
 \frac{3}{6}x-\frac{8}{6}x = - \frac{9}{12} + \frac{4}{12} \\  \\ 
- \frac{5}{6}x = -\frac{5}{12}  (-1)\\  \\ \frac{5}{6}x = \frac{5}{12} \\  \\  x= \frac{5}{12} x \frac{6}{5}  \\  \\ 
x= \frac{6}{12}  \\  \\ x=0,5
eu tenho 4 valores para marcar: a)-1,b)39,c)2,d)6.