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11=6.9-x
We move all terms to the left:
11-(6.9-x)=0
We add all the numbers together, and all the variables
-(-1x+6.9)+11=0
We get rid of parentheses
1x-6.9+11=0
We add all the numbers together, and all the variables
x+4.1=0
We move all terms containing x to the left, all other terms to the right
x=-4.1
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