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6.4-1.2+3x+8.2=19.22
We move all terms to the left:
6.4-1.2+3x+8.2-(19.22)=0
We add all the numbers together, and all the variables
3x-5.82=0
We move all terms containing x to the left, all other terms to the right
3x=5.82
x=5.82/3
x=1+2.82/3
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