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Sa se afle [tex] \frac{3}{4} [/tex] din a =(14-[tex] \frac {14}{5} [/tex]*[tex] \frac {5}{7} [/tex])*4

Răspuns :

a = (14 - 14/5 * 5/7)*4 = (14 - 2)*4 = 12*4 = 48; 3/4 * 48 = 3 *12 = 36

a=(14-2)*4=12*4

(3/4) din 12*4=3*12=36

as simple as that!!