12x+4.5x=400

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Solution for 12x+4.5x=400 equation: 



12x+4.5x=400

We move all terms to the left:

12x+4.5x-(400)=0

We add all the numbers together, and all the variables

16.5x-400=0

We move all terms containing x to the left, all other terms to the right

16.5x=400

x=400/16.5

x=24+1/4.125

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