Tính nhanh :
\(\left(\frac{136}{15}-\frac{28}{5}+\frac{62}{10}\right).\frac{21}{24}\)
Tính :
a) A = 1.2.3 . ..... . 100 - 1.2.3. ... .99 - 1.2.3.98.992
b) B = \(\left(\frac{136}{15}-\frac{28}{5}+\frac{62}{10}\right).\frac{21}{24}\)
Bạn nào làm đúng , nhanh mk tick cho
(\(\frac{136}{15}-\frac{28}{5}+\frac{62}{10}\)) .\(\frac{21}{24}\)
Thực hiện phép tính để tính giá trị các biểu thức sau:
\(a,A=\left(\frac{136}{15}-\frac{28}{5}+\frac{62}{10}\right).\frac{21}{24}\)
\(b,B=70.\left(\frac{131313}{565656}+\frac{131313}{727272}+\frac{131313}{909090}\right)\)
\(c,C=\frac{5}{2.1}+\frac{4}{1.11}+\frac{3}{11.2}+\frac{1}{2.15}+\frac{13}{15.4}\)
a) \(\left(\frac{9}{10}-\frac{15}{16}\right).\left(\frac{5}{12}-\frac{11}{15}-\frac{7}{20}\right)\)
B) \(\frac{-3}{5}+\frac{28}{5}.\left(\frac{43}{56}+\frac{5}{24}-\frac{21}{63}\right)\)
thực hiện phép tính
1. Tìm x thuộc Z biết:
a,\(\frac{-5}{6}.\frac{120}{25}< x< \frac{-7}{15}.\frac{9}{14}\)
b,\(\left(\frac{-5}{3}\right)^3< x< \frac{-24}{35}.\frac{-5}{6}\)
2. Thực hiện phép tính:
a,\(\left(\frac{9}{10}-\frac{15}{16}\right).\left(\frac{5}{12}-\frac{11}{15}-\frac{7}{20}\right)\)
b,\(\frac{-3}{5}+\frac{28}{5}.\left(\frac{43}{56}+\frac{5}{24}-\frac{21}{63}\right)\)
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Tính:
a, \(\frac{-28}{19}.\frac{\left(-38\right)}{14}\)
b, \(\frac{-21}{16}.\frac{\left(-24\right)}{7}\)
c, \(\frac{12}{17}.\frac{\left(-34\right)}{9}\)
d, \(\frac{\left(-15\right)}{4}:\frac{21}{10}\)
e,\(-2\frac{1}{7} :-1\frac{1}{14}\)
bài 1 : tính
1) \(\left(\frac{9}{10}-\frac{15}{16}\right).\left(\frac{5}{12}+\frac{11}{15}-\frac{7}{20}\right)\) 2) \(\frac{-3}{5}+\frac{28}{5}.\left(\frac{43}{56}+\frac{5}{24}-\frac{21}{63}\right)\)
3) \(\frac{17}{5}.\frac{-31}{125}.\frac{1}{2}.\frac{10}{17}.\frac{-1}{2^3}\) 4) \(\left(\frac{11}{4}.\frac{-5}{9}-\frac{4}{9}.\frac{11}{4}\right).\frac{8}{33}\)
\(\frac{-3}{5}+\frac{28}{5}\left(\frac{43}{56}+\frac{5}{24}-\frac{21}{63}\right)\)