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4^7-4x=4^9x-7
We move all terms to the left:
4^7-4x-(4^9x-7)=0
We add all the numbers together, and all the variables
-4x-(4^9x-7)+16384=0
We get rid of parentheses
-4x-4^9x+7+16384=0
We add all the numbers together, and all the variables
-4x-4^9x+16391=0
We move all terms containing x to the left, all other terms to the right
-4x-4^9x=-16391
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