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2.25x+.5x=45
We move all terms to the left:
2.25x+.5x-(45)=0
We add all the numbers together, and all the variables
2.75x-45=0
We move all terms containing x to the left, all other terms to the right
2.75x=45
x=45/2.75
x=16+1/2.75
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