Question

Упрастите вырадение b-1/6б+1/4б, и решите его при б = 4 4/5

Answer 1

$frac{12 - 2 + 3}{12} b = frac{13}{12} times frac{24}{5} = frac{26}{5} = 5 frac{1}{5}$

Answer 2

4 4/5 - 1/6 * 4 4/5 + 1/4 * 4 4/5=
=4 4/5 - 24/30 + 24/20=
=4 4/5 - 4/5 + 1 1/5=
= 4 + 1 1/5 = 5 1/5