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X=5.3X+4X-15
We move all terms to the left:
X-(5.3X+4X-15)=0
We add all the numbers together, and all the variables
X-(9.3X-15)=0
We get rid of parentheses
X-9.3X+15=0
We add all the numbers together, and all the variables
-8.3X+15=0
We move all terms containing X to the left, all other terms to the right
-8.3X=-15
X=-15/-8.3
X=1+2.4814814814815/3.0740740740741
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