3(19-4n)-4=8n-9(n+12)

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Solution for 3(19-4n)-4=8n-9(n+12) equation:



3(19-4n)-4=8n-9(n+12)
We move all terms to the left:
3(19-4n)-4-(8n-9(n+12))=0
We add all the numbers together, and all the variables
3(-4n+19)-(8n-9(n+12))-4=0
We multiply parentheses
-12n-(8n-9(n+12))+57-4=0
We calculate terms in parentheses: -(8n-9(n+12)), so:
8n-9(n+12)
We multiply parentheses
8n-9n-108
We add all the numbers together, and all the variables
-1n-108
Back to the equation:
-(-1n-108)
We add all the numbers together, and all the variables
-12n-(-1n-108)+53=0
We get rid of parentheses
-12n+1n+108+53=0
We add all the numbers together, and all the variables
-11n+161=0
We move all terms containing n to the left, all other terms to the right
-11n=-161
n=-161/-11
n=14+7/11

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