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-7-6(8n+3)=215
We move all terms to the left:
-7-6(8n+3)-(215)=0
We add all the numbers together, and all the variables
-6(8n+3)-222=0
We multiply parentheses
-48n-18-222=0
We add all the numbers together, and all the variables
-48n-240=0
We move all terms containing n to the left, all other terms to the right
-48n=240
n=240/-48
n=-5
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