Question

+b/4+1/3=-b/2+1/6 beijos a garota do blog

Answer 1

+b/4      +1/3      =  -b/2     +1/6  =   mmc 12
3.+b/12 +4.1/12 = -6.b/12 +2.1/12    cancela-se o denominador
3b          +4        = -6b        +2           
3b +6b = +2 +4
9b = +6
  b = +6/9....simplificando por 3
  b = +2/3

Answer 2

+b/4+1/3=-b/2+1/6

3b + 4 = - 6b + 2

3b+6b = 2 - 4

9b = - 2 ==> b = - 2/9