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x+0.3x=224
We move all terms to the left:
x+0.3x-(224)=0
We add all the numbers together, and all the variables
1.3x-224=0
We move all terms containing x to the left, all other terms to the right
1.3x=224
x=224/1.3
x=172+0.40000000000001/1.3
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