Решите уравнение: 1) 2 2/11x - 5/16 = 1 3/4 2) 4 2/9x +3 5/14 = 6 11/21 3) 11/18 - 14/27x = 5/12 4) 1/3x + 1/4x + 1/5x =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

1) 2 2/11x - 5/16 = 1 3/4 24/11х=7/4+5/16 24/11х=28/16+5/16 24/11х=33/16 х=33/16: 24/11=33/16*24/11=3/16*24/1=3/2*3=9/2=4 1/2=4,5 2) 4 2/9x +3 5/14 = 6 11/21 38/9х=137/21-47/14 38/9х=274/42-141/42 38/9х=133/42 х=133/42: 38/9=133/42*9/38=133/14*3/38=3,5/14*3=10,5/14=105/140=3/4=0,75 3) 11/18 - 14/27x = 5/12 -14/27х=5/12-11/18 -14/27х=15/36-22/36 -14/27х=-7/36 х=7/36: 14/27=7/36*27/14=1/36*27/2=1/4*3/2=3/8=0,375 4) 1/3x + 1/4x + 1/5x =94/75 20/60х+15/60х+12/60х=94/75 47/60х=94/75 х=94/75: 47/60=94/75*60/47=2/75*60/1=2/3*4=8/3=2 1/3 5) 4 1/2 : x +1 3/4 = 3 19/28 9/2: х=103/28-7/4 9/(2х)=103/28-49/28 9/(2х)=54/28   умножим на 2 9/х=54/14 9/х=27/7 х=9: 27/7 х=9*7/27=1*7/3=7/3=2 1/3 6) 3 2/3 : (x- 2 4/15) = 3 5/13 11/3 : (x- 34/15) = 44/13 x- 34/15=11/3: 44/13 x- 34/15=11/3*13/44 x- 34/15=1/3*13/4 x- 34/15=13/12 х=13/12+34/15 х=65/60+136/60 х=201/60=3 21/60

1) ( 9/13 ) * 156 = 108 ( кг ) штанга штангиста легчайшего веса  2) 156 - 108 = 48 ( кг 0 ответ на 48 кг больше