Question

Answer 1

Bài 1: 

a: \(=\dfrac{15}{34}+\dfrac{19}{34}+\dfrac{7}{21}+\dfrac{3}{7}-\dfrac{4}{3}\)

\(=1-1+\dfrac{3}{7}=\dfrac{3}{7}\)

b: \(=\dfrac{-5}{3}\left(16+\dfrac{2}{7}-28-\dfrac{2}{7}\right)\)

\(=\dfrac{-5}{3}\cdot\left(-12\right)=20\)

c: \(=\dfrac{3}{2}+\dfrac{4}{7}:\dfrac{-15+7}{9}\)

\(=\dfrac{3}{2}+\dfrac{4}{7}\cdot\dfrac{9}{-8}=\dfrac{3}{2}-\dfrac{36}{56}\)

\(=\dfrac{84}{56}-\dfrac{36}{56}=\dfrac{48}{56}=\dfrac{6}{7}\)

d: \(=6-3\cdot\dfrac{-1}{27}=6+\dfrac{1}{9}=\dfrac{55}{9}\)

e: \(=\left(\dfrac{120}{40}\right)^3=27\)

f: \(=\left(0.25\cdot4\right)^4\cdot4=4\)

g: \(=\dfrac{\left(2^5\right)^4}{\left(2^3\right)^2}=2^{14}\)