Tính nhanh:
a,\(\frac{7}{13}\cdot\frac{7}{15}-\frac{5}{12}\cdot\frac{21}{39}+\frac{49}{91}\cdot\frac{8}{15}\)
b,\(\left(\frac{12}{199}+\frac{23}{200}-\frac{34}{201}\right)\cdot\left(\frac{1}{2}-\frac{1}{3}-\frac{1}{6}\right)\)
1. Tính nhanh
a, \(\frac{7}{13}.\frac{7}{15}-\frac{5}{12}.\frac{21}{39}+\frac{49}{91}.\frac{8}{15}\)
b, \(\left(\frac{12}{199}+\frac{23}{200}-\frac{34}{201}\right).\left(\frac{1}{2}-\frac{1}{3}-\frac{1}{6}\right)\)
c,\(\frac{5}{2.1}+\frac{4}{1.11}+\frac{3}{11.2}+\frac{1}{2.15}+\frac{13}{15.4}\)
Tính nhanh:
a, \(\frac{7}{13}\) . \(\frac{7}{15}\) - \(\frac{5}{12}\) . \(\frac{21}{39}\) + \(\frac{49}{91}\) . \(\frac{8}{15}\)
Tính nhanh:
a, \(\frac{7}{13}\) . \(\frac{7}{15}\) - \(\frac{5}{12}\) . \(\frac{21}{39}\) + \(\frac{49}{91}\) . \(\frac{8}{15}\)
Tính nhanh:
a, \(\frac{7}{13}\) . \(\frac{7}{15}\) - \(\frac{5}{12}\) . \(\frac{21}{39}\) + \(\frac{49}{91}\) . \(\frac{8}{15}\)
Ai trả lời giúp mk đii~~
Tính nhanh
a, \(\frac{7}{13}\)x\(\frac{7}{15}\)-\(\frac{5}{12}\)x\(\frac{21}{39}\)+\(\frac{49}{91}\)x\(\frac{8}{15}\)3
b,(\(\frac{12}{199}\)+\(\frac{23}{200}\)-\(\frac{34}{201}\)) x (\(\frac{1}{2}-\frac{1}{3}-\frac{1}{6}\))
1.Tính:
\(a.\frac{7}{13}.\frac{7}{15}-\frac{5}{12}.\frac{21}{39}+\frac{49}{91}.\frac{8}{15}\)
\(b.\left(\frac{12}{199}+\frac{23}{200}-\frac{34}{201}\right).\left(\frac{1}{2}-\frac{1}{3}-\frac{1}{6}\right)\)
2.So sánh
\(a.3^{200}và2^{300}\)
\(b.71^{50}và37^{75}\)
Tính nhanh:
a,\(\frac{7}{15}\). \(\frac{7}{13}\) - \(\frac{5}{12}\) . \(\frac{21}{39}\) + \(\frac{49}{91}\) . \(\frac{8}{15}\)
Ai trả lời giúp mk đii~~
1. Tính nhanh:
a.\(\frac{17}{13}\times\frac{7}{15}-\frac{5}{12}\times\frac{21}{39}+\frac{49}{91}\times\frac{8}{15}\)
b.\(\left(\frac{12}{199}+\frac{23}{200}-\frac{34}{201}\right)\times\left(\frac{1}{2}-\frac{1}{3}-\frac{1}{6}\right)\)
2. So sánh:
a. 3200và2300
b. 7150và3775
c.\(\frac{201201}{202202}\)và\(\frac{201201201}{202202202}\)