Question

[lương Gia Khiêm]

rút gon p/s sau:

a) 35 / 14 và 125 / 50

b) 4 x 5 + 4 x 11 / 8 x 7 + 4 x 3

c) 3 x 11 + 7 x 11 / 22 x2 + 11 x 6

d) 1997 x 1996 - 1 / 1995 x 1997 + 1996

m.n giup ,k vs samg mai mk di hoc rk

Answer 1

[Kim Hue Truong]

a) \(\frac{35}{14}=\frac{5\times7}{2\times7}=\frac{5}{2}\)

\(\frac{125}{50}=\frac{5\times5\times5}{2\times5\times5}=\frac{5}{2}\)

b)\(\frac{4\times5+4\times11}{8\times7+4\times3}=\frac{4\times\left(5+11\right)}{4\times\left(2\times7+3\right)}=\frac{16}{17}\)

c) \(\frac{3\times11+7\times11}{22\times2+11\times6}=\frac{11\times\left(3+7\right)}{22\times\left(2+3\right)}=\frac{11\times10}{22\times5}=\frac{11\times2\times5}{11\times2\times5}=1\)