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345=x+.3*345
We move all terms to the left:
345-(x+.3*345)=0
We add all the numbers together, and all the variables
-(x+103.5)+345=0
We get rid of parentheses
-x-103.5+345=0
We add all the numbers together, and all the variables
-1x+241.5=0
We move all terms containing x to the left, all other terms to the right
-x=-241.5
x=-241.5/-1
x=241+0.5/1
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