\(=\frac{3}{4}-\frac{43}{80}:\left(\frac{-4}{5}+\frac{5}{2}.\frac{3}{4}\right)\)
\(=\frac{3}{4}-\frac{43}{80}:\left(\frac{-4}{5}+\frac{15}{8}\right)\)
\(=\frac{3}{4}-\frac{43}{80}:\frac{43}{40}\)
\(=\frac{4}{3}-\frac{1}{2}=\frac{5}{6}\)
thực hiện phép tính sau:
a, 1\(\frac{13}{15}\). 0,75 - ( \(\frac{8}{15}\)+ 25%)
b, 0,75 - \(\frac{43}{80}\): ( -\(\frac{4}{5}\) + 2,5. \(\frac{3}{4}\))
12)\(0,2.\frac{15}{36}-\left(\frac{2}{5}+\frac{2}{3}\right):1\frac{1}{5}\)
13)\(1\frac{13}{15}.0,75-\left(\frac{8}{15}+0,25\right).\frac{24}{27}\)
16)\(\frac{1}{2}+\frac{3}{4}-\left(\frac{3}{4}-\frac{4}{5}\right).\left(-2,75\right)\)
18)\(\left(\frac{7}{8}-\frac{3}{4}\right).1\frac{1}{3}-\frac{2}{7}.\left(3.5\right)^2\)
22)\(1\frac{13}{15}.0,75-\left(\frac{11}{20}+25\%\right):\frac{7}{3}\)
23)\(\frac{\left(\frac{2}{3}-0,75\right).\left(0,2-\frac{2}{5}\right)}{\frac{5}{9}-1\frac{1}{12}}\)
33)\(\left(25\%+\frac{1}{3}+0,75\right):\left(4\frac{3}{4}-3\frac{1}{2}\right)\)
35)\(\left(\frac{377}{-231}-\frac{123}{89}+\frac{34}{791}\right).\left(\frac{1}{6}-\frac{1}{8}-\frac{1}{24}\right)\)
so sánh = cách hợp lí
P1 =\(\left(-\frac{43}{51}\right)\cdot\left(\frac{-19}{80}\right)\)
P2 = \(\left(-\frac{7}{13}\right)\cdot\left(-\frac{4}{65}\right)\cdot\left(-\frac{8}{31}\right)\)
P3= \(-\frac{5}{10}\cdot-\frac{4}{10}\cdot-\frac{3}{10}....\frac{3}{10}\cdot\frac{4}{10}\cdot\frac{5}{10}\)
\(\frac{1.2:\left(1\frac{1}{5}-1.25\right)}{0.32+\frac{2}{25}}+\frac{\left(81+\frac{2}{25}\right):2\frac{1}{4}}{\left(5\frac{3}{7}-2\frac{1}{4}\right):4\frac{43}{56}}\)
Giải nhanh tick sớm , làm đầy đủ
Giúp mình giải bài toán về với nhé Cảm ơn các bạn rất nhiều( nhớ giải đầy đủ giúp mình nhé)
\(\frac{\left(\frac{13}{84}×1,4-2,5×\frac{7}{180}\right)\div2\frac{7}{18}+4\frac{1}{2}×0,1}{70,5-528\div7\frac{1}{2}}\)
\(\frac{\left(5\frac{4}{45}-4\frac{1}{15}\right)×30}{1\frac{1}{3}}-\frac{4,25\div0,85+1\div0,5}{\left(5,36-4,06\right)\div3-6,5}\)
\(\left(\frac{-4}{5}+\frac{4}{3}\right)+\left(\frac{-5}{4}+\frac{14}{5}\right)-\frac{7}{3}\)
giải thích nhé
Tính:
1,\(\frac{2}{5}+\left(-\frac{4}{5}\right)+\left(-\frac{1}{2}\right)\)
2,\(A=\frac{0,375-0,3+\frac{3}{11}+\frac{3}{12}}{-0,625+0,5-\frac{5}{11}-\frac{5}{12}}+\frac{1,5+1-0,75}{2,5+\frac{5}{3}-1,25}\)
3,\(B=\frac{\frac{1}{3}-\frac{1}{7}-\frac{1}{13}}{\frac{2}{3}-\frac{2}{7}-\frac{2}{13}}.\frac{\frac{1}{3}-0,25+0,2}{1\frac{1}{6}-0,875+0,7}+\frac{6}{7}\)
\(\left(\frac{1,5+1-0,75}{2,5+\frac{5}{3}-1,25}+\frac{0,375-0,3+\frac{3}{11}+\frac{3}{12}}{-0,625+0,5-\frac{5}{11}-\frac{5}{12}}\right):\frac{1890}{2005}+115\)
Các bạn giải giúp mình câu này với:
\(\left(3\frac{1}{3}+2,5\right):\left(3\frac{1}{6}-4\frac{1}{5}\right)-\frac{11}{31}\)
