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4x^2+6x-13x+5=4x^2+6x-13x+5
We move all terms to the left:
4x^2+6x-13x+5-(4x^2+6x-13x+5)=0
We add all the numbers together, and all the variables
4x^2-7x-(4x^2+6x-13x+5)+5=0
We get rid of parentheses
4x^2-4x^2-7x-6x+13x-5+5=0
We add all the numbers together, and all the variables
=0
x=0/1
x=0
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