Question

Сократите дробь 21*2+6*12/15*19-11*15 помогите плиз

Answer 1

Ответ:

$\frac{21 \times 2 + 6 \times 12}{15 \times 19 - 11 \times 15} = \frac{7 \times 3 \times 2 + 3 \times 2 \times 4 \times 3}{15(19 - 11)} = \frac{6(7 + 12)}{15(19 - 11)} = \frac{6 \times 19}{15 \times 8} = \frac{3 \times 2 \times 19}{5 \times 3 \times 4 \times 2} = \frac{19}{20} = 0.95$