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5.5x+0.3x=30
We move all terms to the left:
5.5x+0.3x-(30)=0
We add all the numbers together, and all the variables
5.8x-30=0
We move all terms containing x to the left, all other terms to the right
5.8x=30
x=30/5.8
x=5+1/5.8
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