Respuesta :

The equation is 33 = 13 + 12 + 3x
                           33 = 25 + 3x
                          -25  -25
                        ---------------------
                             8 = 3x
                           ÷3    ÷3
                        ---------------
                          2.666.... = x

2.666 is x i think it is the answer
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