ex 4 rd va rog coroana si multe ct

Ex 4 Rd Va Rog Coroana Si Multe Ct class=

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Vezi imaginea ZMADA20
4. a) 5/8*3/7*4/9 = 5/2*1/7*1/3 = 5/42

b) 1/9*2/5*18/7 = 2/5 *2/7 = 4/35

c) 2/7 *3/10 * 14/10 = 3/5*2/10 = 3/5*1/5 = 3/25

d) 2 intregi 1/2 * 3/5 * 1/2 = 5/2*3/5*1/2 = 1/2*3*1/2 = 3/4

e) 4* 3/7* 2 intregu1/3 = 4*3/7*7/3 = 4

f) 2 *  3 intregi 1/4 * 5/8 = 2*13/4*5/8 = 13/2*5/8 = 65/16

g) 2 intregi 1/3 * 3 intregi 1/2 * 4 = 7/3*7/2*4 = 7/3 *7*2 = 98/3

h) 1/5 * 2 intregi 1/2 * 3 = 1/5 * 5/2 *3 = 1/2 * 3 = 3/2