Question

Calculati----------------------xk

Answer 1

( / = pe, supra ) e) 3 - 1/2 = 3/1 - 1/2........ dupa il amplificam pe 3/1 cu 2, adica
3 x 2 = 6, 1 x 2 = 2..............si ajungem la........ 6/2 - 1/2 = 5/2

f) 2 - 3/4 = 2/1 - 3/4.....facem la fel.... 2 x 4 = 8,  1 x 4 = 4....... 
8/4 - 3/4 = 5/4
 
g) 1 - 4/15 = 1/1 - 4/15 .....din nou.....  1 x 15 = 15
15/15 - 4/15 = 11/15

h) 1 - 3/7 = 1/1 - 3/7 ......iar.... 1 x 7 = 7
7/7 - 3/7 = 4/7


sper ca te-am ajutat