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7.3x+6.9-5.2x=-16.2
We move all terms to the left:
7.3x+6.9-5.2x-(-16.2)=0
We add all the numbers together, and all the variables
2.1x+23.1=0
We move all terms containing x to the left, all other terms to the right
2.1x=-23.1
x=-23.1/2.1
x=-11
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