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19=3x-5x+9
We move all terms to the left:
19-(3x-5x+9)=0
We add all the numbers together, and all the variables
-(-2x+9)+19=0
We get rid of parentheses
2x-9+19=0
We add all the numbers together, and all the variables
2x+10=0
We move all terms containing x to the left, all other terms to the right
2x=-10
x=-10/2
x=-5
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