Question

Tìm x: 

 a, 4/5 * 8/3 * x/7 = 96/105          b, 7/4 * 3/x * 11/5 = 231/200

                  GIẢI HỘ MK VỚI NHA!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 1

A. \(\frac{4}{5}\times\frac{8}{3}\times\frac{x}{7}=\frac{96}{105}\)

=\(\frac{4}{5}\times\left(\frac{8}{3}\times\frac{x}{7}\right)=\frac{96}{105}\)

= \(\frac{8}{3}\times\frac{x}{7}=\frac{96}{105}\div\frac{4}{5}\)

= \(\frac{8}{3}\times\frac{x}{7}=\frac{480}{420}=\frac{8}{7}\)

=\(\frac{x}{7}=\frac{8}{7}\div\frac{8}{3}\)

= \(X=\frac{24}{56}=\frac{3}{7}\)

\(X=3\)

@Moon