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3x-19=8x+4
We move all terms to the left:
3x-19-(8x+4)=0
We get rid of parentheses
3x-8x-4-19=0
We add all the numbers together, and all the variables
-5x-23=0
We move all terms containing x to the left, all other terms to the right
-5x=23
x=23/-5
x=-4+3/5
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