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Answer:x = - 4Step-by-step explanation:given=since thebaseson both sides are equal, both 10 , thenequatetheexponents, that is3x = x - 8 ( subtract x from both sides )2x = - 8 ( divide both sides by 2 )x = - 4as a checksubstitutex = - 4 into both sides of the equationleft side ==right side ==both sides areequal, then the solution is x = - 4...