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28=(2x)+(2x)+8
We move all terms to the left:
28-((2x)+(2x)+8)=0
We add all the numbers together, and all the variables
-(4x+8)+28=0
We get rid of parentheses
-4x-8+28=0
We add all the numbers together, and all the variables
-4x+20=0
We move all terms containing x to the left, all other terms to the right
-4x=-20
x=-20/-4
x=+5
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