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6.1x-6.8=12.9
We move all terms to the left:
6.1x-6.8-(12.9)=0
We add all the numbers together, and all the variables
6.1x-19.7=0
We move all terms containing x to the left, all other terms to the right
6.1x=19.7
x=19.7/6.1
x=3+1/4.3571428571429
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