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455=x+3x+1.5x+189
We move all terms to the left:
455-(x+3x+1.5x+189)=0
We add all the numbers together, and all the variables
-(5.5x+189)+455=0
We get rid of parentheses
-5.5x-189+455=0
We add all the numbers together, and all the variables
-5.5x+266=0
We move all terms containing x to the left, all other terms to the right
-5.5x=-266
x=-266/-5.5
x=48+2/5.5
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