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x^2-4-x^2-2=-2x+1
We move all terms to the left:
x^2-4-x^2-2-(-2x+1)=0
We add all the numbers together, and all the variables
-(-2x+1)-6=0
We get rid of parentheses
2x-1-6=0
We add all the numbers together, and all the variables
2x-7=0
We move all terms containing x to the left, all other terms to the right
2x=7
x=7/2
x=3+1/2
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