Question

quy đồng  17 phần 60 ; -5 phần 18; -64 phần 90

Answer 1

\(\dfrac{17}{60};\dfrac{-5}{18};\dfrac{-64}{90}\) MSC : 180

\(\dfrac{17}{60}=\dfrac{17\cdot3}{60\cdot3}=\dfrac{51}{180}\)

\(\dfrac{-5}{18}=\dfrac{\left(-5\cdot10\right)}{18\cdot10}=\dfrac{-50}{180}\)

\(\dfrac{-64}{90}=\dfrac{\left(-64\cdot2\right)}{90\cdot2}=\dfrac{-128}{180}\)

Answer 2

17 x 3/ 60 x 3 = 51/180

-5 x10/18 x 10 = -50/180

-64 x2/90 x2 = -128/180

Answer 3

\(\dfrac{17}{60}=\dfrac{17.3}{60.3}=\dfrac{51}{180}\)

\(-\dfrac{5}{18}=\dfrac{-5.10}{18.10}=-\dfrac{50}{180}\)

\(-\dfrac{64}{90}=\dfrac{-64.2}{90.2}=-\dfrac{128}{180}\)

Answer 4

=51/180

=-50/180

=-128/180