Respostas

2014-07-06T15:29:35-03:00
2x+10=56
2x=56-10
2x=46
x= 46 
       2
x= 23 
5 4 5
2014-07-06T15:31:19-03:00
2X + 10= 56
2X= 56 - 10 
2X= 46
X=46/2
X= 23 

SUBSTITUINDO O VALOR DE X

2.23 + 10
46+10
56