Respostas

2014-03-03T21:04:37-03:00
16 + x = 43
x = 43 - 16
x = 27


x + 25 = 43
x = 43 - 25
x = 18


43 + x = 16
x = 16 - 43
x = -27
1 5 1
2014-03-03T21:13:44-03:00
16+x=43.        
 x= 43 -16
x=27
 
X+25=43.
x= 43 -25
x= 18
      
43+x=16.  
 x=16/43