Question

12 − (n − 6) = 3(n + 5) what is n ?

Answer 1

Answer:

$n=\frac{3}{4}$

Step-by-step explanation:

$12-(n-6)=3(n+5)\\12-n+6=3n+15\\18-n=3n+15\\18-n+n=3n+15+n\\18=4n+15\\18-15=4n+15-15\\3=4n\\\frac{3}{4}=\frac{4n}{4}\\\frac{3}{4}=n$

Answer 2

Answer:

$12 - (n - 6) = 3(n + 5) \\ 12 - n + 6 = 3n + 15 \\ 3n + n = 12 + 6 - 15 \\(3 + 1)n = 18 - 15 \\ 4n = 3 \\ \boxed{n = \frac{3}{4} }$

• n = 3/4 is the right answer.