117/49: 44/49*1 4/13+24 23/91+32 11/14-16*2 43/48

1)  1 17/49: 44/49=  66/49: 44/49= 66х49/49х44=6/4=1  1/2; 2)1  1/2  х 1 4/13= 3/2х17/13=3х17/2х13=51/26=1  25/26; 3)16  х  2 43/48=16/1 х 139/48=139/3=46  1/3; 4)  1  25/26+24 23/91=25целых  175+46/182=25 221/182=26 39/182; 5)  26  29/182 + 32 11/14= 58целых 39+143/182=58  182/182=59; 6)59-46  1/3=59/1-139/3=38/3=12  2/3; вроде  бы  как-то так, если не ошиблась.

6-x=15
x=6-15
x=-9

x+7=3
x=3-7
x=-4

1) (5/12+1/8):3/8=
     5/12+1/8=10/24+3/24=13/24
     13/24:3/8=13/24*8/3=13/9=1 4/9
2) 5/12+1/8:3/8=
    1/8:3/8=1/8*8/3=1/3
    5/12+1/3=5/12+4/12=9/12=3/4

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