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0.7x+2.8=0x=
We move all terms to the left:
0.7x+2.8-(0x)=0
We add all the numbers together, and all the variables
-0.3x+2.8=0
We move all terms containing x to the left, all other terms to the right
-0.3x=-2.8
x=-2.8/-0.3
x=9+0.1/0.3
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