Răspuns:
T1
1. a) 19/24 ; b) 7/60
2. a) 13/4 ; b) 53/6
3. 3/1, 3/2
4. 7/x = 21/12 => x = 4
5. 3n/2^5 < 1 => n = {1, 2, 3, 4, 5, ..., 11}
6. 125/5^10 = 5x/25^11
5^3/5^10 = 5x/5^22
5^10 • 5x = 5^25
5x = 5^5 => x = 5^4
T2
1. a) 5/8 ; b) 2/9
2. a) 5 întregi 3/8 ; b) 8 întregi 3/11
3. 1/4, 2/4, 3/4
4. 2/3 =? 16/24
16 • 3 =? 24 • 2 DA
5. 27^4/81^n
27^4 = (3^3)^4 = 3^12
81^n = (3^4)^n = 3^4n
4n = 12 => n = 3