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121.14=5.7(1+1.8n)+7.5n
We move all terms to the left:
121.14-(5.7(1+1.8n)+7.5n)=0
We add all the numbers together, and all the variables
-(5.7(1.8n+1)+7.5n)+121.14=0
We calculate terms in parentheses: -(5.7(1.8n+1)+7.5n), so:We get rid of parentheses
5.7(1.8n+1)+7.5n
We add all the numbers together, and all the variables
7.5n+5.7(1.8n+1)
We multiply parentheses
7.5n+5.7n+5.7
We add all the numbers together, and all the variables
13.2n+5.7
Back to the equation:
-(13.2n+5.7)
-13.2n-5.7+121.14=0
We add all the numbers together, and all the variables
-13.2n+115.44=0
We move all terms containing n to the left, all other terms to the right
-13.2n=-115.44
n=-115.44/-13.2
n=8+5.3478260869565/7.1739130434782
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