Let
x------> height of Leon's older brother
y------> height of Leon
Convert mixed number to an improper fraction
4\frac{3}{4}\ ft=\frac{4*4+3}{4}= \frac{19}{4}\ ft443 ft=44∗4+3=419 ft
we know that
x=\frac{19}{4}\ ftx=419 ft -----> equation A
y=x-\frac{1}{3}y=x−31 -----> equation B
substitute equation A in equation B
y=\frac{19}{4}-\frac{1}{3}=\frac{53}{12}\ fty=419−31=1253 ft
Convert to mixed number
\frac{53}{12}=\frac{48}{12}+\frac{5}{12}=4\frac{5}{12}\ ft1253=1248+125=4125 ft
therefore
the answer is
4\frac{5}{12}\ ft4125 ft
