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-5.4-7.8x=7.408
We move all terms to the left:
-5.4-7.8x-(7.408)=0
We add all the numbers together, and all the variables
-7.8x-12.808=0
We move all terms containing x to the left, all other terms to the right
-7.8x=12.808
x=12.808/-7.8
x=-1+4.968253968254/7.7380952380952
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