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0.6x+8.7=7.8
We move all terms to the left:
0.6x+8.7-(7.8)=0
We add all the numbers together, and all the variables
0.6x+0.9=0
We move all terms containing x to the left, all other terms to the right
0.6x=-0.9
x=-0.9/0.6
x=-1+0.3/0.6
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