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