Question

Resolva as equações: a) %x - 10 = x + 1 /2
b) 2(x - 1)/3 = 3x + 6 / 5=
c) 3 (x - 5) /6 + 2x /4 = 7

Answer 1

b) 2(x - 1) =  3x + 6     ==> 10(x-1) = 3(3x + 6 )
          3            5

10x - 10 = 9x + 18 ==> 10x-9x = 18+ 10 ==> x = 28
=================================================
c) 3 (x - 5)  = 7     ==>   4.3(x-5) = 7(6 + 2x)
   6 + 2x
      4         

12x - 60 = 42 + 14x ==> 14x - 12x = - 60 - 42

2x = - 102 ==> x = - 51