Jawabanmu

2014-02-14T08:40:32+07:00
X ∈ A

a. 6x + 5 = 26 - x 
    6x + x = 26 - 5
    7 x     = 21
    x        = 3 
    Hp {3}

b. 2 - 4x = 3 
    -4x    = 3 - 2
    -4x    = 1
    x       = - 0,25 
    Hp { }

c. x - 2   = 2x + 36
    x - 2x = 36 + 2 
    -x       = 38
     x       = - 38 
    Hp { }

d. -5x -4x +10 = 1
    - 9x +10     = 1
    - 9x            = -9
       x             = 1
    Hp {1}

e. 2 + x/4 = 5
   8 + x    = 20
   x          = 12 
   Hp {12}


Semoga membantu ^_^
2014-02-14T12:34:21+07:00
Bilangan asli = 1,2,3,4,5, ...

a) 6x + 5  = 26 - x                         Hp = { 3 }
    6x + 5 - 5 = 26 - 5 - x
           6x = 21 - x
    6x + x  = 21
           7x = 21
             x =  \frac{21}{7}
             x = 3

b) 2 - 4x = 3                                   Hp = {   }
    2 - 2 - 4x = 3 - 2
        -4x = 1
          x =  \frac{1}{-4}
          x = - \frac{1}{4}

c) x - 12 = 2x + 36                          Hp = {   }
    x - 12 + 12 = 2x + 36 + 12
          x = 2x + 48
    x - 2x = 48
         - x = 48
           x =  \frac{48}{-1}
           x = -48 

d) (-5x - 4x) + 10 = 1                        Hp = { 1 }
            - 9x + 10 = 1
       -9x + 10 - 10 = 1 - 10
                     -9x = -9
                        x =  \frac{-9}{-9}
                        x = 1

e) 2 +  \frac{x}{4}  = 5       Hp = { 12 }   
    2 - 2 +  \frac{x}{4}  = 5 - 2 
                \frac{x}{4}  = 3
                \frac{x}{4}  =  \frac{3}{1}
                                              x = 12