Question

thực hiện các phép tính 

(-3,2) . \(\frac{-15}{64}\)+ (0.8 - 2\(\frac{4}{15}\)) : 3\(\frac{1}{2}\)

Answer 1

\(\left(-3,2\right).\frac{-15}{64}+\left(0,8-2\frac{4}{15}\right):3\frac{1}{2}=-\frac{16}{5}.-\frac{15}{64}+\left(\frac{4}{5}-\frac{34}{15}\right):\frac{7}{2}\)

\(=-\frac{3}{4}+\left(-\frac{22}{15}\right).\frac{2}{7}\)

\(=-\frac{3}{4}-\frac{44}{105}\)

\(=\frac{-315-176}{420}\)

\(=-\frac{491}{420}\)

Answer 2

\(\left(-3,2\right)\cdot\frac{-15}{64}+\left(0,8-2\frac{4}{15}\right):3\frac{1}{2}\)

\(=\frac{3}{4}+\frac{-22}{15}:\frac{7}{2}\)

\(=\frac{3}{4}+\frac{-44}{105}\)

\(=\frac{-315}{176}\)

=))

Answer 3

ban vy dung