Решите уравнения 2/15 y +3/4=5/6 5/8m - 7/12 m+ 5/6 m =1/4

2/15 у   +3/4 = 5/6 2/15 у = 5/6  -3/4 2/15 у = (10-9)/12 2/15 у = 1/12 у= 1/12 :  2/15 = 1/12  * 15/2 = 15/24 у= 5/8 ============= 2/15 *  5/8  + 3/4 = 5/6 (1*1)/(3*4)  +3/4=5/6 1/12  + 3/4 = 5/6 1/12  +9/12  = 5/6 10/12 = 5/6 5/6=5/6 5/8 m  - 7/12 m  +5/6 m = 1/4 (5/8  -7/12  +5/6 ) m = 1/4 (15/24  -  14/24  + 20/24 ) m =  1/4 21/24  m =  1/4 7/8  m = 1/4 m = 1/4 :  7/8  = 1/4  *  8/7  = (1*2) / (1*7) m= 2/7 ============ 5/8 *2/7  -  7/12  *  2/7  +  5/6  * 2/7 =1/4 5/28  -   1/6  + 5/21 = 1/4 15/84  -  14/84  +  20/84 = 1/4 21/84 = 1/4             1/4 = 1/4