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6.9=8.6-0.2x
We move all terms to the left:
6.9-(8.6-0.2x)=0
We add all the numbers together, and all the variables
-(-0.2x+8.6)+6.9=0
We get rid of parentheses
0.2x-8.6+6.9=0
We add all the numbers together, and all the variables
0.2x-1.7=0
We move all terms containing x to the left, all other terms to the right
0.2x=1.7
x=1.7/0.2
x=8+0.1/0.2
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