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4.5+9.9x=25.2
We move all terms to the left:
4.5+9.9x-(25.2)=0
We add all the numbers together, and all the variables
9.9x-20.7=0
We move all terms containing x to the left, all other terms to the right
9.9x=20.7
x=20.7/9.9
x=2+0.9/9.9
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