Răspuns:
Explicație pas cu pas:
4/10 = 2/5
28/84 = 7/21 = 1/3
333/444 = 3/4
25/3250 = 1/130
2*5*7/3*5*11 = 14/33
2^3/2^5 = 1/2^2
5^4 * 7^3 * 11^4 / 5^6 * 7 * 11^3 = 7^2*11/5^2 = 49*11/25 = 539/25
(3a + 6b)/(5a + 10b) = 3(a + 2b)/5(a + 2b) = 3/5
(9a + 3)/(12a + 4) = 3(3a + 1)/4(3a + 1) = 3/4
