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7(-2-4x)=266
We move all terms to the left:
7(-2-4x)-(266)=0
We add all the numbers together, and all the variables
7(-4x-2)-266=0
We multiply parentheses
-28x-14-266=0
We add all the numbers together, and all the variables
-28x-280=0
We move all terms containing x to the left, all other terms to the right
-28x=280
x=280/-28
x=-10
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