Respostas

  • Usuário do Brainly
2014-08-22T21:55:59-03:00
2014-08-23T12:59:54-03:00
Outra maneira, 
162 = B +11 + B - 23
162= 2B - 23
162+23 = 2B
174=2B
174/2 = B
B=87
A=87+11
A=98