` 5/9 . ( -2/13)+5/9.(-7/13)+(-8/13) = 5/9(-2/13-7/13)-8/13=5/9.(-9/13)-8/13=-5/13-8/13=-13/13=-1 `

GHI ra phân số đc ko

=100/273 hả đk ???🤔🤔😵😵

\(\frac{3}{4}x\frac{5}{6}-\frac{1}{6}=\frac{11}{24}\)

\(4\frac{8}{5}-\frac{2}{3}=\frac{28}{5}-\frac{2}{3}=\frac{74}{15}\)

35/6+x=3/4x51/2

35/6+x=153/8

         x=153/8-35/6

          x=319/24

\(\frac{35}{6}+X=\frac{3}{4}\times5\frac{1}{2}\)

 \(\frac{35}{6}_{ }+X=\frac{33}{8}\)

              \(X=\frac{33}{8}-\frac{35}{6}\)

             \(X=\frac{-41}{24}\)

một trăm linh hai phần ba lăm

a)  5 7

b)  - 3 5

c)  11 15

d)  16 3

31/2+45/7-55/14  ?

\(\dfrac{20}{7}\)

    31/2+45/7-55/14 
= 217/14+90/14-55/14
= 252/14
^{_{Rồi tự rút gọn(Nếu được)}}
 

\(\frac{75}{100}=\frac{3}{4}\)

dap an D

Phương anh Nguyễn Ngọc

75/100 = 3/4

Đáp án D

D,ba phần tư

\(\dfrac{1}{7}\cdot\dfrac{5}{9}+\dfrac{5}{9}\cdot\dfrac{2}{7}+\dfrac{5}{9}\cdot\dfrac{1}{7}+\dfrac{5}{9}\cdot\dfrac{3}{7}\)

=5/9(1/7+2/7+1/7+3/7)

=5/9*1

=5/9

\(\frac{4}{5}\), \(\frac{5}{4}\)và \(\frac{3}{5}\)

\(\frac{4}{5}\)

\(\frac{5}{4}\)

\(\frac{3}{5}\)

cảm ơn mọi người

\(\frac{6}{15}+\frac{5}{3}+\frac{2}{5}\)

\(=\frac{6}{15}+\frac{25}{15}+\frac{6}{15}\)

\(=\frac{37}{15}\)

The Tempest

\(\frac{6}{15}\)\(+\frac{5}{3}\)\(+\frac{2}{5}\)

\(=\frac{6}{15}\)\(+\frac{25}{15}\)\(+\frac{6}{15}\)

\(=\frac{6+25+6}{15}\)

\(=\frac{37}{15}\)