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x^-4=81/16
We move all terms to the left:
x^-4-(81/16)=0
We add all the numbers together, and all the variables
x^-4-(+81/16)=0
We add all the numbers together, and all the variables
x-4-(+81/16)=0
We get rid of parentheses
x-4-81/16=0
We multiply all the terms by the denominator
x*16-81-4*16=0
We add all the numbers together, and all the variables
x*16-145=0
Wy multiply elements
16x-145=0
We move all terms containing x to the left, all other terms to the right
16x=145
x=145/16
x=9+1/16
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