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2.7x-4.5=6.3
We move all terms to the left:
2.7x-4.5-(6.3)=0
We add all the numbers together, and all the variables
2.7x-10.8=0
We move all terms containing x to the left, all other terms to the right
2.7x=10.8
x=10.8/2.7
x=4
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