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What is the solution set? 6-4x=7x-9x+4

Sagot :

6-4x=-2x +4
6=2x +4
2=2x
So
X=1
   6 - 4x = 7x - 9x + 4
   6 - 4x = -2x + 4
     + 4x   + 4x     
          6 = 2x + 4
       - 4          - 4
          2 = 2x
          2     2
          1 = x