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2+x*0.8=6
We move all terms to the left:
2+x*0.8-(6)=0
We add all the numbers together, and all the variables
x*0.8-4=0
Wy multiply elements
0.8x-4=0
We move all terms containing x to the left, all other terms to the right
0.8x=4
x=4/0.8
x=5
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