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9.9=x+4.8x=
We move all terms to the left:
9.9-(x+4.8x)=0
We add all the numbers together, and all the variables
-(+5.8x)+9.9=0
We get rid of parentheses
-5.8x+9.9=0
We move all terms containing x to the left, all other terms to the right
-5.8x=-9.9
x=-9.9/-5.8
x=1+3.7272727272727/5.2727272727273
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