Respostas

2013-06-05T09:50:50-03:00

7(x-5)=3(x-1)            3(x-2)=4(-x+3)

7x-35=3x+3               3x-6=-4x+12

7x-3x=3+35                3x+4x=12+6

4x=32                           7x=18

 x=32/4                          x=18/7

 x=8                                x=2,57

 

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