Question

n/3+n/4=1/2 Can anybody solve that and explain it to me?

Answer 1

[ 4n + 3n] / 12 = 1/2

7n = 6

n = 6/7

Answer 2

make your life easy by multiplying both sides by 12 get
\[12\times (\frac{n}{3}+\frac{n}{4})=\frac{1}{2}\times 12\]
\[4n+3n=6\]
\[7n=6\]
\[n=\frac{6}{7}\]