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0.5x+0.3x=6
We move all terms to the left:
0.5x+0.3x-(6)=0
We add all the numbers together, and all the variables
0.8x-6=0
We move all terms containing x to the left, all other terms to the right
0.8x=6
x=6/0.8
x=7+0.4/0.8
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