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dau coroană...... urgent.....va rog...

Dau Coroană Urgentva Rog class=

Răspuns :

5)   8/14 +2/7 =8/14+ 4/14= 12/14   amplifici cu 2
6)  3/15 *3 1/3= 3/15* 10/3=  30/45
7)    25/13 :  15/26= 25/13 * 26/15= 650/195
8)   (15*4500 )/100= 6750/100=675
9)   6/11 * 22/30= 132/330
5) 8/14 + 2/7 = 4/7+2/7 = 6/7

6) 3/15 × 3 1/3 = 3/15 × 10/3 = 1/3 × 2 = 2/3

7) 25/13 : 15/26 = 25/13 × 26/15 = 5 × 2/3 = 10/3

8) 15% din 4500 = 15/100 × 4500 = 15×45 = 675

9) 6/11 din 22/30^2 = 6/11 × 22/30^2 = 6 × 2/30^2 = 12/30^2 = 12/900 = 1/75