Question

a,(2x -7) -135=0 b,[(6x-39) :3] . 28=5628

Answer 1

a, (2x - 7) - 135 = 0

2x - 7 = 135

2x = 142

x = 71

b, [(6x - 39) : 3] . 28 = 5628

(6x - 39) : 3 = 201

6x - 39 = 603

6x = 642

x = 107

Answer 2

(2x-7) - 135 = 0

=> 2x - 7 = 135

=> 2x = 142

=> x = 71

[(6x - 39) : 3] . 28 = 5628

=> (6x - 39)  : 3 = 201

=> 6x - 39 = 603

=> 6x = 642

=> x = 107 

Answer 3

a, ( 2x - 7 ) - 135 = 0

=> ( 2x - 7 ) = 135

 2x = 135 + 7 = 142

  x = 142 : 2 = 71

b,[ ( 6x - 39 ) : 3 ] . 28 = 5628

             ( 6x - 39 ) : 3 = 5628 : 28 = 201

              6x - 39         = 201 . 3 = 603

                   6x          = 603 + 39 = 642

                      x         = 642 : 6 = 107