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X=6.6+0.4X
We move all terms to the left:
X-(6.6+0.4X)=0
We add all the numbers together, and all the variables
X-(0.4X+6.6)=0
We get rid of parentheses
X-0.4X-6.6=0
We add all the numbers together, and all the variables
0.6X-6.6=0
We move all terms containing X to the left, all other terms to the right
0.6X=6.6
X=6.6/0.6
X=11
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