Question

13/15m-3/4m+1/12m при m = 2 1/2; 6 1/4

Answer 1

$\frac{13}{15} m - \frac{3}{4} m + \frac{1}{2} m = \frac{52}{60} m - \frac{45}{60} m + \frac{30}{60} m = \frac{37}{60} m$
при m=$2 \frac{1}{2}$
$\frac{37}{60} * 2 \frac{1}{2} = \frac{37*5}{60*2} = \frac{37}{12*2} = \frac{37}{24} =1 \frac{13}{24}$
при m=$6 \frac{1}{4}$
$\frac{37}{60} *6 \frac{1}{4} = \frac{37*25}{60*4} = \frac{37*5}{12*4} = \frac{185}{48} =3 \frac{41}{48}$