Given the equation 5 + x - 12 = x-7
part a. solve the equation 5 + x-12 = x-7. in your final answer, be sure to state the solution and include all of your
work
part b. use the values x= 4,0,5 to prove your solution to the equation 5 + x-12 = x-7. in your final answer include al
of your calculations.

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