Tinh
a) \(\left(-1,25\right).14,7.\left(-8\right)\)
b)\(\dfrac{3}{4}-1\dfrac{1}{6}\)
c)\(\dfrac{-3}{5}.51\dfrac{11}{13}+\dfrac{3}{5}.21\dfrac{11}{13}\)
d)\(\left|\dfrac{-3}{4}\right|.\left|-\dfrac{2}{3}\right|\)
e)\(\dfrac{-3}{5}+5\dfrac{1}{13}-\dfrac{2}{3}+1\dfrac{3}{5}-\dfrac{11}{33}\)
f)\(\dfrac{3}{4}.\sqrt{16}-10.\sqrt{0,81}\)
g)\(\left(\dfrac{3}{4}\right)^3:\left(-\dfrac{3}{8}\right)^3\)
h)\(\dfrac{6^4.15^3}{8.9^3.10^3}\)
GIUP MK T ^ T
a,\(\left(-1,25\right).14,7.\left(-8\right)\)
\(=\left[\left(-1,25\right).\left(-8\right)\right].14,7\)
\(=10.14,7=147\)
b, \(\dfrac{3}{4}-1\dfrac{1}{6}\)
\(=\dfrac{3}{4}-\dfrac{7}{6}\)
\(=\dfrac{9-14}{12}=\dfrac{-5}{12}\)
câu c: Mình không biết bạn có gõ sai không, bạn coi đề lại xem.
d, \(\left|\dfrac{-3}{4}\right|.\left|-\dfrac{2}{3}\right|\)
\(=\dfrac{3}{4}.\dfrac{2}{3}=\dfrac{1.1}{2.1}=\dfrac{1}{2}\)
e, ?
c: \(=\dfrac{-3}{5}\left(51+\dfrac{11}{13}-21-\dfrac{11}{13}\right)=\dfrac{-3}{5}\cdot30=-18\)
e: \(=\dfrac{-3}{5}+1+\dfrac{3}{5}+5+\dfrac{1}{13}-\dfrac{2}{3}-\dfrac{1}{3}\)
\(=\dfrac{1}{13}\)
h: \(=\dfrac{2^4\cdot3^4\cdot3^3\cdot5^3}{2^3\cdot3^6\cdot2^3\cdot5^3}=\dfrac{3}{2}\)
f: \(=\dfrac{3}{4}\cdot4-10\cdot\dfrac{9}{10}=3-9=-6\)
