6.
Объяснение:
1/2+1/3+1/х=1
1/х=1 - 1/2 - 1/3
1/х = 1/6
х= 6
1/2 + 1/3 + 1/x = 1
3/6 + 2/6 + 1/x = 1
5/6 + 1/x = 6/6
1/x = 6/6 - 5/6
1/x = 1/6
x = 6
6.
Объяснение:
1/2+1/3+1/х=1
1/х=1 - 1/2 - 1/3
1/х = 1/6
х= 6
1/2 + 1/3 + 1/x = 1
3/6 + 2/6 + 1/x = 1
5/6 + 1/x = 6/6
1/x = 6/6 - 5/6
1/x = 1/6
x = 6