Решите уравнение 1)(x-11/30)-16/45=2/9 2)(x-7/5)+5/8=17/24 3)4/5-(x+1/60)=2/3

Решим уравнения, приводя дроби к общему знаменателю:

1) (х - 11/30) - 16/45 = 2/9;

х - 11/30 = 2/9 + 16/45;

х - 11/30 = 10/45 + 16/45;

х - 11/30 = 26/45;

х = 26/45 + 11/30;

х = 52/90 + 33/90;

х = 85/90;

х = 17/18.

2) (х - 7/5) + 5/8 = 17/24;

х - 7/5 = 17/24 - 5/8;

х - 7/5 = 17/24 - 15/24;

х - 7/5 = 2/24;

х - 7/5 = 1/12;

х = 1/12 + 7/5;

х = 5/60 + 84/60;

х = 89/60;

х = 1 29/60.

3) 4/5 - (х + 1/60) = 2/3;

4/5 - 2/3 = х + 1/60;

12/15 - 10/15 = х + 1/60;

2/15 = х + 1/60;

2/15 - 1/60 = х;

8/60 - 1/60;

х = 7/60.