Respostas

2014-02-13T18:21:39-02:00
2/5x + 2 = 15
2/5x = 13
x = 13 : 2/5
x = 13 . 5/2
x = 65/2

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2014-02-13T18:58:24-02:00
2/5.x+2=15
2x/5+2=15
2x/5=13
2x= 13·5
x= 65/2
x=32,5


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