Tính giá trị của các biểu thức sau:
a) P= \(\left(-0,5-\frac{3}{5}\right):\left(-3\right)+\frac{1}{3}-\left(\frac{-1}{6}\right):\left(-2\right)\)
b) Q= \(\left(\frac{2}{25}-1,008\right):\frac{4}{7}:\left(3\frac{1}{4}-6\frac{5}{9}\right).2\frac{2}{17}\)
TỪ CÁI CHỖ \(3\frac{1}{4}\) ĐẾN \(2\frac{2}{17}\) LÀ CÓ DẤU NGOẶC VUÔNG NHÉ , GIÚP MK VS MK ĐANG CẦN RẤT GẤP
a)\(P=\left(-0,5-\frac{3}{5}\right):\left(-3\right)+\frac{1}{3}-\left(-\frac{1}{6}\right):\left(-2\right)\)
\(=\left(\frac{-1}{2}-\frac{3}{5}\right):\left(-3\right)+\frac{1}{6}:\left(-2\right)\)
\(=\frac{-11}{30}:\left(-3\right)+\frac{1}{3}+\frac{1}{6}:\left(-2\right)\)
\(=\frac{11}{30}+\frac{1}{3}+\frac{-1}{12}\)
\(=\frac{37}{60}\)
b)\(Q=\left(\frac{2}{25}-1,008\right):\frac{4}{7}:\left[\left(3\frac{1}{4}-6\frac{5}{9}\right).2\frac{2}{17}\right]\)
\(=\left(\frac{2}{25}-\frac{126}{125}\right):\frac{4}{7}:\left[\left(\frac{13}{4}-\frac{59}{9}\right).\frac{36}{17}\right]\)
\(=\frac{-116}{125}:\frac{4}{7}:\left[\frac{-119}{36}.\frac{36}{17}\right]\)
\(=\frac{-116}{125}:\frac{4}{7}:-7\)
\(=\frac{29}{125}\)
