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-64=4(7+4n)+6(6+8n)
We move all terms to the left:
-64-(4(7+4n)+6(6+8n))=0
We add all the numbers together, and all the variables
-(4(4n+7)+6(8n+6))-64=0
We calculate terms in parentheses: -(4(4n+7)+6(8n+6)), so:We get rid of parentheses
4(4n+7)+6(8n+6)
We multiply parentheses
16n+48n+28+36
We add all the numbers together, and all the variables
64n+64
Back to the equation:
-(64n+64)
-64n-64-64=0
We add all the numbers together, and all the variables
-64n-128=0
We move all terms containing n to the left, all other terms to the right
-64n=128
n=128/-64
n=-2
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