Dreamcaseidn
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What is the best way to classify each equation? 22-3x+7x=4(x+5) ,6(2x-3=3(3-5), 6x-14=2(3x-7), 6x+3(x-4)=8(x-3)

Sagot :

Panoyinidn
1. 22 - 3x + 7x = 4(x + 5)
   22 - 3x + 7x  = 4x + 20
        +3x  +3x   +3x         
         22 + 10x = 7x + 20
                  -7x   -7x       
           22 + 3x = 20
          -22         -22
                   3x = -2
                    3      3
                     x = -2/3

2. 6(2x - 3) = 3(3 - 5)
    12x - 18 = 3(-2)
    12x - 18 = -6
           +18   +18
           12x = 12
            12     12
               x = 1

3. 6x - 14 = 2(3x - 7)
    6x - 14 =  -3x
    6x - 14 = 2(-7)
    6x - 14 = -14
         +14   +14
           6x = 0
            6     6
             x = 0

4. 6x + 3(x - 4) = 8(x - 3)
    6x + 3x - 12 = 8x - 24
            9x - 12 = 8x - 24
           -8x          -8x       
              x - 12 = -24
                 +12    +12
                     x = -12
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