Respostas

2014-04-03T00:35:00-03:00
A- x= 0,777 10.x= 0,777.10 10x = 7,777 10x - x= 7,777 - 0,777 9x = 7 x= 9 7 B- x= 1,131313 x.100= 1,131313. 100 100x= 131,131313 100x-x= 131,1313-1,1313 99x= 112 x= 112 99 C- x= 3,1222 10x= 31,222 100x=312,222 100x-10x= 312,22-31,22 90x= 281 x= 281 90
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2014-04-03T00:47:04-03:00
7 (Sete sobre nove)... o resto eu n sei
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9