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=$6 frac{1}{4}$
$frac{37}{60} *6 frac{1}{4} = frac{37*25}{60*4} = frac{37*5}{12*4} = frac{185}{48} =3 frac{41}{48}$