Решитжалуйста срочно надо!!

1 7/8 : 3 2\3= 1*8+7/8 : 3*3+2/8= 15/8:11/3=15*3/8*11=45/88 4 19/20: 1 3/10 = 4*10+19/20 : 1*10+3/10 = 99/20 : 13/10 = 99*10/20*13 = 990/260 3 2/9 : 2 2/15 = 3*9+2/9 :2*15+2/15 = 29/9 : 32/ 15= 29*15/9*32 = 435/288=1 49/96 4 9/14 : 2 13/14 = 4*14+9/14 : 2*14+13/14 = 65/14 : 41/14 = 65/14 * 14/41= 910/574 = 1 336/574 1 1/5 : 1 2/3 = 1*5+2/3 : 1*3+2/3 = 6/1 : 5/3 = 6*3/5*5 = 18/25 4 11/18 : 3 3/10= 4*18+11/18 : 3*10+3/10 = 83/18 : 33/10 = 83*10/18*33=830/594 = 1 118/297 5 : 3 5/19 = 5/1 : 3 *19+5/19 = 5/1:62/19=5*19/62=95/62=1 33/62 1 7/9 : 3/4 = 1*9+7/9 : 3/4 = 16/9:3/4 = 16*4/9*3 = 64/27=2 10/27