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3n=-19+4
We move all terms to the left:
3n-(-19+4)=0
We add all the numbers together, and all the variables
3n-(-15)=0
We add all the numbers together, and all the variables
3n+15=0
We move all terms containing n to the left, all other terms to the right
3n=-15
n=-15/3
n=-5
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