Chứng minh rằng:

a) 1717 / 2929 = 17171717 / 29292929

b)  3210 - 34 / 4170 - 41 = 6420 - 68 / 8340 - 82

a) Ta có: \(\frac{1717}{2929}=\frac{1717:101}{2929:101}=\frac{17}{29}\left(1\right)\)

\(\frac{17171717}{29292929}=\frac{17171717:1010101}{29292929:1010101}=\frac{17}{29}\left(2\right)\)

từ (1) và(2) =>\(\frac{1717}{2929}=\frac{17171717}{29292929}\)

b) Ta có: \(\frac{3210-34}{4170-41}=\frac{3176}{4129}\left(1\right)\)

\(\frac{6420-68}{8340-82}=\frac{6352}{8258}=\frac{6352:2}{8158:2}=\frac{3176}{4129}\left(2\right)\)

Từ (1) và (2) => \(\frac{3210-34}{4170-41}=\frac{6420-68}{8340-82}\)

17/29 rut gon nen bang nhau

ko biet