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2.7x-8.4=7.8
We move all terms to the left:
2.7x-8.4-(7.8)=0
We add all the numbers together, and all the variables
2.7x-16.2=0
We move all terms containing x to the left, all other terms to the right
2.7x=16.2
x=16.2/2.7
x=5+1/1
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