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1.3+4x-2.8=3
We move all terms to the left:
1.3+4x-2.8-(3)=0
We add all the numbers together, and all the variables
4x-4.5=0
We move all terms containing x to the left, all other terms to the right
4x=4.5
x=4.5/4
x=1+0.5/4
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