tính nhanh nha

D=\(\frac{3}{2x4}+\frac{3}{4x6}+...+\frac{3}{98x100}\)

A=\(\frac{1}{2}+\frac{1}{3}+\frac{1}{6}+\frac{1}{12}\)

B=\(6\frac{2}{3}+7\frac{5}{8}+3\frac{1}{3}+4\frac{5}{8}\)

C=[\(4\frac{2}{5}+2\frac{3}{7}\)] - [\(2\frac{2}{5}-1\frac{4}{7}\)]

E=\(\frac{131313}{151515}+\frac{131313}{353535}+\frac{131313}{636363}+\frac{131313}{999999}\)

làm ơn giúp mik nha

mik đang cần gấp

mik sẽ tick(chắc chắn lun) cho người nhanh nhất

So sánh:\(\frac{\frac{\frac{1}{2}}{\frac{3}{4}}}{\frac{\frac{5}{6}}{\frac{7}{8}}}+\frac{\frac{\frac{8}{7}}{\frac{6}{5}}}{\frac{\frac{4}{3}}{\frac{2}{1}}}\) và\(\frac{\frac{\frac{1}{2}}{\frac{3}{4}}+\frac{\frac{8}{7}}{\frac{6}{5}}}{\frac{\frac{5}{6}}{\frac{7}{8}}+\frac{\frac{4}{3}}{\frac{2}{1}}}\)và \(\frac{\frac{\frac{1}{2}+\frac{8}{7}}{\frac{3}{4}+\frac{6}{5}}}{\frac{\frac{5}{6}+\frac{4}{3}}{\frac{7}{8}+\frac{2}{1}}}\)và\(\frac{\frac{\frac{1+8}{2+7}}{\frac{3+6}{4+5}}}{\frac{5+4}{\frac{6+3}{2+1}}}\)

1.Thực hiện phép tính

a,\(\frac{5}{8}x\frac{4}{10}+\frac{2}{3}\)

b,\(\frac{5}{12}x\frac{4}{7}+\frac{5}{12}x\frac{3}{7}\)

c,\(\left(\frac{4}{5}+\frac{3}{10}-\frac{1}{5}\right)x6:\frac{4}{7}\)

2.So Sánh

a,\(\frac{5}{8}v\text{à}\frac{2}{3}\)

b.\(\frac{9}{14}v\text{à}\frac{17}{21}\)

c.\(\frac{418}{417}v\text{à}\frac{925}{926}\)

ai giải đúng đầu tiên mik tick

b=(6:9\(\frac{3}{5}\) -1\(\frac{1}{7}\) x\(\frac{7}{8}\) ):(4\(\frac{1}{5}\)x\(\frac{10}{11}\) +5\(\frac{2}{11}\) )x1\(\frac{2}{5}\) )x1\(\frac{2}{5}\) x2\(\frac{1}{7}\) 

mk đang cần gấp ai nhanh mk tk