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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
-(x+6.9)+11=0
We get rid of parentheses
-x-6.9+11=0
We add all the numbers together, and all the variables
-1x+4.1=0
We move all terms containing x to the left, all other terms to the right
-x=-4.1
x=-4.1/-1
x=4+0.1/1
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