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5.3x+8=2.3x+20
We move all terms to the left:
5.3x+8-(2.3x+20)=0
We get rid of parentheses
5.3x-2.3x-20+8=0
We add all the numbers together, and all the variables
3x-12=0
We move all terms containing x to the left, all other terms to the right
3x=12
x=12/3
x=4
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