Решите уравнения:
1) 2 2/11 x - 5/16 = 1 3/4
2) 4 2/9 x + 3 5/14 = 6 11/21
3) 11/18 - 14/27 x = 5/12
4)1/3 x + 1/4 x + 1/5 x = 1 19/75
5)4 1/2 : x + 1 3/4 = 3 19/28
6) 3 2/3 : (x - 2 4/15) = 3 5/13

Первое :2 2/11x=1 3/4+5/162 2/11x=1 12/16+5/162 2/11x=1 17/1624/11x=33/16x=33/16*11/24x=121/128Второе :4 2/9 х+3 5/14=6 11/214 2/9 х=6 11/21 - 3 5/14 4 2/9 х=3 7/424 2/9 х=3 1/64 8/36 х=3 6/36х=(4 8/36)/(3 6/36)х=(114/36)/(152/36)х=(114/36)*(36/152)х=114/152х=3/4Третее :11/18-14/27*х=5/1214/27*х=11/18 - 5/1214/27*х=(22-15)/3614/27*х=7/36Х=7/36 : 14/27Х=7/36 * 27/14Х=1/4 * 3/2Х=3/8Четвёртое : 1/3x+1/4x+1/5x=1 19/75х*( 1/3+1/4+1/5)=1 19/75х*47/60=1 19/75х=1 19/75 : 47/60х=94/75*60/47х=8/5х= 1 3/5Пятое :4  1/2 : х + 1 3/4 = 3 19/284  1/2 : х = 3  19/28 - 1  3/4 4  1/2 : х = 1  13/14х= 4  1/2 : 1 13/14х= 2 1/3Шестое :Х - 2 4/15 = 3 2/3 : 3 5/13Х - 2 4/15 = 11/3 : 44/13Х - 2 4/15 = (11×13)/(3×44)Х - 2 4/15 = 13/12Х - 2 4/15 = 1целая 1/12Х = 1 2/12 + 2 4/15Х = 1 5/60 + 2 16/60Х = 3 21/60 Х = 3 7/20Ответ. 3 целых 7/20.Все!)