Question

ex 9 va rog . Dau coroana. Exercițiile le vreau rezolvate nu doar rezultatul final.Multumesc ;)​

Answer 1

a) Cand imparti 2 fractii, se va folosi inmultirea iar a doua fractia se va inversa

a) 3/5 * 7/6 = 7/10

b) 7/11*33/14 = 3/2

c) 8/35*(-21/4) = -6/5

d) 84/29*(-29/35) = -12/5

e) -31/15*(-5/2) = 31/6

f) -13/100*(-50/39) = 1/6

g) 2,5=25/10=5/2

9 intregi 1/9 = (81+1)/9 = 82/9

5/2*82/9 = 205/9

h) 1,8=18/10 = 9/5

2 intregi 1/2= 5/2

9/5*5/9:5/2 = 1*2/5 = 2/5

i) 43/5*21/43:2/5 = 21/5*5/2 = 21/2

j) 308/3:154/27 = 308/3*27/154 = 18

k) 7:7/2*4/5 = 7*2/7*4/5 = 2*4/5 = 8/5

l) 77/5*15/22 = 21/2