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0.8x-5.1=1.9
We move all terms to the left:
0.8x-5.1-(1.9)=0
We add all the numbers together, and all the variables
0.8x-7=0
We move all terms containing x to the left, all other terms to the right
0.8x=7
x=7/0.8
x=8+0.6/0.8
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