Question

(1,8*0,4-2 9/15:6 1,3) : (-0,8)
Помогите пж

Answer 1

Ответ:

$- \frac{259}{360} = - 0.7194$

Объяснение:

$(1.8 \times 0.4 - 2 \frac{9}{15} \div 6 \frac{1}{3} ) \div ( - 0.8) = (0.72 - \frac{39}{15} \times \frac{1}{6} \times \frac{1}{3} ) \div ( - \frac{4}{5} ) = ( \frac{18}{25} - \frac{13}{15} \times \frac{1}{6} ) \div ( - \frac{4}{5} ) = ( \frac{18}{25} - \frac{13}{90} \div ( - \frac{4}{5} ) = \frac{259}{450} \div ( - \frac{4}{5} ) = - \frac{259}{450} \div \frac{5}{4} = - \frac{259}{90} \times \frac{1}{4} = - \frac{259}{360} = - 0.7194$