Решите уравнение (х+4/21) - 4/15=16/35! (х-8/9) + 3/8=19/36! 6 ц 5/27 - (х-1 ц 2/9) = 3 ц 20/81 буква ц = 1 целая

1) (х + 4/21) - 4/15 = 16/35;

х + 4/21 = 16/35 + 4/15;

х + 4/21 = (16 * 3) / 105 + (4 * 7) / 105;

х + 4/21 = 48/105 + 28/105;

х = 76/105 - 4/21;

х = 76/105 - (4 * 5) / 105;

х = 76/105 - 20/105;

х = 56/105.

х = 8/15.

2) (х - 8/9) + 3/8 = 19/36;

х - 8/9 = 19/36 - 3/8;

х = 19/36 + 8/9 - 3/8;

х = 19/36 + 32/36 - 3/8;

х = 51/36 - 3/8;

х = 17/12 - 3/8;

х = 34/24 - 9/24;

х = 25/24;

х = 1 1/24.

3) 6 5/27 - (х - 1 2/9) = 3 20/81;

6 5/27 - 3 20/81 = х - 1 2/9;

6 - 3 + 15/81 - 20/81 + 1 2/9 = х;

3 - 5/81 + 1 + 18/81 = х;

2 13/81 = х.