Question

Từ bài 29-34 Cảm ơn nhiều ạ

Answer 1

Bài 29: 

a: \(\dfrac{3}{2}=\dfrac{12}{8};\dfrac{3}{12}=\dfrac{2}{8};\dfrac{2}{3}=\dfrac{8}{12};\dfrac{12}{3}=\dfrac{8}{2}\)

b: \(-\dfrac{2}{4}=\dfrac{5}{-10};\dfrac{-2}{5}=\dfrac{4}{-10};\dfrac{4}{-2}=\dfrac{-10}{5};\dfrac{5}{-2}=-\dfrac{10}{4}\)

Bài 30:

a: \(4\cdot5=\left(-2\right)\cdot\left(-10\right)\)

nên 4/-2=-10/5; 4/-10=-2/5; -2/4=5/-10; -10/4=5/-2

b: \(2\cdot7=\left(-1\right)\cdot\left(-14\right)\)

nên 2/-1=-14/7; 2/-14=-1/7; -1/2=7/-14; -14/2=7/-1