Пошаговое объяснение:
1.(х+8/9)+3/8=19/36
Х=19/36-3/8-8/9
Х=32/72-27/72-64/72
Х=-59/72
2. 6 5/27-(х-1 2/9)=3 20/81
6 5/27-х+1 2/9=3 20/81
Х=6 5/27+1 2/9-3 20/81
Х=6 15/81+1 18/81-3 20/81
Х=4 13/81
Пошаговое объяснение:
1.(х+8/9)+3/8=19/36
Х=19/36-3/8-8/9
Х=32/72-27/72-64/72
Х=-59/72
2. 6 5/27-(х-1 2/9)=3 20/81
6 5/27-х+1 2/9=3 20/81
Х=6 5/27+1 2/9-3 20/81
Х=6 15/81+1 18/81-3 20/81
Х=4 13/81
8х+64+27=38
8х+91=38
8х=38-91
8х=-53
53
х=-8