Решите уравнение. 1) 1/3х + 1/4х - 1/5х = 2) 1(8/9)х

1) 1/3х + 1/4х - 1/5х = 1(8/15);
20/60х + 15/60х - 12/60х = 1(8/15);
23/60х = 23/15;
х = 23/15 : 23/60;
х = 23/15 * 60/23;
х = 4.

2) 1(8/9)х + 2(2/15) = 4(29/30);
1(8/9) = 4(29/30) - 2(2/15);
1(8/9)х = 2(5/6);
х = 2(5/6) : 1(8/9);
х = 17/6 * 9/17;
х = 1(1/2).

3) 2(1/3) - 1/24х = 13/16;
1/24х = 2(1/3) - 13/16;
1/24х = 1(25/48);
х = 1(25/48) : 1/24;
х = 73/48 : 24/1;
х = 36(1/2).

4) 6(1/6)х - 11/18 = 5/12;
6(1/6)х = 5/12 + 11/18;
6(1/6)х = 5/12 + 11/18;
6(1/6)х = 37/36;
х = 37/36 : 6(1/6);
х = 37/36 * 6/37;
х = 1/6.