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x+0.4x=276
We move all terms to the left:
x+0.4x-(276)=0
We add all the numbers together, and all the variables
1.4x-276=0
We move all terms containing x to the left, all other terms to the right
1.4x=276
x=276/1.4
x=197+0.20000000000005/1.4
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