25/100 + 19/22 +19/35 + 3/4 + 3/22 +16/35

2/5 : 4/7 - 2/5 : 2/3

Tính :

\(\frac{0,6:\frac{4}{5}.125}{0,64-\frac{1}{25}}+\frac{\left(10-\frac{2}{25}\right):\frac{4}{70}}{\left(6\frac{5}{9}-3\frac{1}{4}\right).2\frac{1}{17}}+\frac{6}{5}.\frac{1}{2}:\frac{3}{5}\)

Tính : \(\frac{0,6:\frac{4}{5.}.1,25}{0,64-\frac{1}{25}}+\frac{\left(10-\frac{2}{25}\right):\frac{4}{70}}{\left(6\frac{5}{9}-3\frac{1}{4}\right).2\frac{1}{17}}+\frac{6}{5}.\frac{1}{2}:\frac{3}{5}\)

Tính giá trị biểu thức:

\(A=\frac{\frac{16}{10}:\left(1\frac{3}{5}\times \frac{5}{4}\right)}{\frac{64}{100}-\frac{1}{25}}+\frac{\left(\frac{108}{100}-\frac{2}{25}\right):\frac{4}{7}}{\left(5\frac{5}{9}-2\frac{1}{4}\right)\times 2\frac{2}{17}}+\frac{3}{5}\times \frac{1}{2}:\frac{2}{5}\)

Thực hiện phép tính :

a) 3,54 x 73 + 0,23 x 25 + 3,54 x 27 + 0,17 x 25

b) 536 x 23 + 23 x 36 + 23

c)\(4\frac{2}{5}+2\frac{3}{7}-2\frac{2}{5}+5\frac{4}{7}\)

Tính giá trị biểu thức sau :

 \(A=\frac{\frac{16}{10}:\left(1\frac{3}{5}\times \frac{5}{4}\right)}{\frac{64}{100}-\frac{1}{25}}+\frac{\left(\frac{108}{100}-\frac{2}{25}\right):\frac{4}{7}}{\left(5\frac{5}{9}-2\frac{1}{4}\right)\times 2\frac{2}{17}}+\frac{3}{5}\times \frac{1}{2}:\frac{2}{5}\)

2   2/5 * 25 /18 
9/11 : 2 5/2 * 2 3/4
10:35/24 : 36/7

(2017 - 1/4-2/5-3/5-4/7-...-2017/2020):(1/20+1/25+1/30+1/35+....+1/10100)

Tính:

a,\(\frac{\left(3+\frac{1}{6}\right)-\frac{2}{5}}{\left(5-\frac{1}{6}\right)+\frac{7}{10}}\)

b,\(\frac{\left(4,08-\frac{2}{25}\right):\frac{4}{17}}{\left(6\frac{5}{9}-3\frac{1}{4}\right)x2\frac{2}{7}}\)

c,\(\frac{2-\frac{1}{4}+\frac{1}{3}-\frac{3}{5}}{3-\frac{1}{5}-\frac{5}{3}}\)

a) x + 1/4 = 1/2

b) x - 3/4 = 2/5 

c) x x 2/7 = 9/35

d) x : 12/25 = 5