Question

[Nguyễn Huỳnh Việt Phú Quý]

2) a) Tìm A/B biết 

A/B : 3/5=4/7

5/6-A/B=2/9 

Answer 1

[꧁๖ۣۜKα¢ɦĭ๖꧂ ( team gà công nghiệp....]

\(\frac{A}{B}\):\(\frac{3}{5}\)=\(\frac{4}{7}\)

                  x =\(\frac{4}{7}\)X\(\frac{3}{5}\)

                  x =\(\frac{12}{35}\)

\(\frac{5}{6}\)__\(\frac{A}{B}\)=\(\frac{2}{9}\)

                     x =\(\frac{5}{6}\)__\(\frac{2}{9}\)

                     x =\(\frac{33}{54}\)

Answer 2

[đặng đức anh]

12/35