\(\left(-1,25\right).14,7.\left(-8\right)\) 

\(\frac{3}{4}-1\frac{1}{6}\)

\(\frac{-3}{5}.51\frac{11}{13}+\frac{3}{5}.21\frac{11}{13}\)

\(|\frac{-3}{4}|.|-\frac{2}{3}|\)

\(\frac{-3}{5}+5\frac{1}{13}-\frac{2}{3}+1\frac{3}{5}-\frac{11}{33}\)

\(\frac{3}{4}.\sqrt{16}-10.\sqrt{0,81}\)

\(\left(\frac{3}{4}\right):\left(-\frac{3}{8}\right)\)

\(\frac{6^4.15^3}{8.9^3.10^3}\)

BT1: Thuc hien phep tinh

\(\left(-1,25\right).14,7.\left(-8\right)\)

\(\frac{3}{4}-1\frac{1}{6}\)

\(\frac{-3}{5}.51\frac{11}{13}+\frac{3}{5}.21\frac{11}{13}\)

\(\left[\frac{-3}{4}\right].\left[-\frac{2}{3}\right]\)

\(\frac{-3}{5}+5\frac{1}{13}-\frac{2}{3}+1\frac{3}{5}-\frac{11}{13}\)

\(\frac{3}{4}.\sqrt{16-10}.\sqrt{0,81}\)

\(\left(\frac{3}{4}\right)^3:\left(-\frac{3}{8}\right)^3\)

\(\frac{6^4.15^3}{8.9^3.10^3}\)

BT2: Tim x,y biet:

\(x-\frac{3}{5}=\frac{3}{5}\)

\(\left[x\right]-\frac{4}{5}=\frac{2}{5}\)

\(\frac{x}{-5}=\frac{24}{15}\)

\(\frac{x}{4}=\frac{y}{5}vax-y=21\)

2 Thực hiện phép tính

\(\frac{17}{9}-\frac{17}{9}:\left(\frac{7}{3}+\frac{1}{2}\right)\)

\(\frac{4}{3}.\frac{2}{5}-\frac{3}{4}.\frac{2}{5}\)

\(-\frac{3}{4}.5\frac{3}{13}-0.75.\frac{36}{13}\)

\(3.\left(-\frac{4}{3}\right)^2-\frac{7}{3}\)

\(-\frac{5}{7}.\frac{3}{11}+\frac{-5}{7}.\frac{8}{11}+3\frac{5}{7}\)

\(32\frac{1}{7}:\left(\frac{-5}{4}\right)-47\frac{1}{7}:\left(\frac{-5}{4}\right)\)

\(\left(\frac{2}{3}+\frac{1}{2}\right)^2-\frac{1}{12}\\ \frac{1}{4}-\frac{5}{12}:\frac{1}{6}+\frac{-6}{5}\\ \frac{17}{21}+\frac{5}{23}-\frac{1}{2}+\frac{4}{21}-1\frac{5}{23}\)

\(\left(-3\right)^2+\sqrt{\frac{16}{25}}-\sqrt{9}+\frac{\sqrt{81}}{3}\)

Bài 1: Tính
\(\frac{3}{8}.19\frac{1}{3}-\frac{3}{8}.33\frac{1}{3}\)

\(1\frac{4}{23}+\frac{5}{21}-\frac{4}{23}+0,5+\frac{16}{21}\)

\(\frac{21}{47}+\frac{9}{45}+\frac{26}{47}+\frac{4}{5}\)

\(\frac{15}{12}+\frac{5}{13}-\frac{3}{12}-\frac{18}{13}\)

\(\frac{11}{24}-\frac{5}{41}+\frac{13}{24}+0,5-\frac{36}{41}\)

\(\left(-\frac{3}{4}+\frac{2}{3}\right):\frac{5}{11}+\left(-\frac{1}{4}+\frac{1}{3}\right):\frac{5}{11}\)

\(\left(-3\right)^2.\left(\frac{3}{4}-0,25\right)-\left(3\frac{1}{2}-1\frac{1}{2}\right)\)