\(3\frac{2}{5}\)+\(4\frac{3}{7}\)-\(\frac{1}{4}\)+\(\frac{44}{77}\)-\(2\frac{2}{5}\)-0,75 

Tìm x

a \(\frac{3}{4}+\frac{1}{4}xX=2\)

b X - \(\frac{2}{3}x\frac{9}{4}=2,5-\frac{1}{2}\)

c \(2xX+\frac{1}{3}=\frac{4}{3}\)

d \(X:\frac{2}{3}+0,75=\frac{9}{4}+3\)

e \(\frac{6}{4}:X+\frac{1}{2}=\frac{9}{4}x\frac{2}{3}\)

f \(Xx\frac{3}{5}-\frac{2}{5}=3\frac{3}{4}-1\)

B=\(\frac{5}{7}.\frac{14}{11}-\frac{5}{7}.\frac{5}{11}-\frac{5}{11}.\frac{2}{7}\)

C=\(1+\frac{2}{6}+\frac{2}{12}+\frac{2}{20}+\frac{2}{30}+\frac{2}{42}\)

D=\(\frac{0,75-0,6+\frac{3}{19}+\frac{3}{19}}{2,75-2,2+\frac{11}{19}+\frac{11}{91}}\)

1) \(79\frac{19}{35}.\frac{7}{90}+15\frac{16}{35}.\frac{7}{90}\)

2)\(\left(3\frac{1}{5}-\frac{1}{11}\right).11\)

3)\(4\frac{1}{5}:\left(2\frac{1}{3}.1\frac{2}{5}\right)\)

4)\(13,2.\frac{15}{64}-\left(\frac{4}{5}+\frac{2}{3}\right):3\frac{2}{3}\)

1 tính

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

5-\(\frac{7}{9}\)+\(\frac{2}{3}\)-\(\frac{5}{6}\)/ \(\frac{4}{9}\)

\(5\frac{1}{5}\)+\(\frac{4}{5}\)/ (2-\(\frac{2}{3}\))x3

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