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3x+21/2=5x-5.5
We move all terms to the left:
3x+21/2-(5x-5.5)=0
We get rid of parentheses
3x-5x+5.5+21/2=0
We multiply all the terms by the denominator
3x*2-5x*2+21+(5.5)*2=0
We add all the numbers together, and all the variables
3x*2-5x*2+32=0
Wy multiply elements
6x-10x+32=0
We add all the numbers together, and all the variables
-4x+32=0
We move all terms containing x to the left, all other terms to the right
-4x=-32
x=-32/-4
x=+8
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