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-2(x-13)=-20
We move all terms to the left:
-2(x-13)-(-20)=0
We add all the numbers together, and all the variables
-2(x-13)+20=0
We multiply parentheses
-2x+26+20=0
We add all the numbers together, and all the variables
-2x+46=0
We move all terms containing x to the left, all other terms to the right
-2x=-46
x=-46/-2
x=+23
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