Вычислите значение выражения наиболее удобным способом: 1) 3/7+14/19+4/7+5/19; 4) 9/40+13/50+12/50+11/40; 2) 7/16+11/42+9/16+17/42;

1) 3/7+14/19+4/7+5/19 = 7/7 + 19/19 = 1+1=2; 2) 7/16+11/42+9/16+17/42 = 16/16 + 28/42 = 1 + 2/3 = 1 2/3; 3) 5/18+4/81+7/18+5/81 = 12/18+9/81=6/9+1/9=7/9; 4) 9/40+13/50+12/50+11/40 = 20/40+25/50=1/2+1/2=1; 5) 3 5/11+1 3/16 + 2 5/16 + 4 6/11 = 7 11/11+3 8/16=8+3 1/2 = 11 1/2; 6) 1 17/24+3 1/36+5 4/24+2 8/36=6 21/24+5 9/36=6 7/8+5 1/4=11 7/8+2/8=11 9/8= 12 1/8

1) 3/7+14/19+4/7+5/19 = 7/7 + 19/19 = 1+1=2; 2) 7/16+11/42+9/16+17/42 = 16/16 + 28/42 = 1 + 2/3 = 1 2/3; 3) 5/18+4/81+7/18+5/81 = 12/18+9/81=6/9+1/9=7/9; 4) 9/40+13/50+12/50+11/40 = 20/40+25/50=1/2+1/2=1; 5) 3 5/11+1 3/16 + 2 5/16 + 4 6/11 = 7 11/11+3 8/16=8+3 1/2 = 11 1/2; 6) 1 17/24+3 1/36+5 4/24+2 8/36=6 21/24+5 9/36=6 7/8+5 1/4=11 7/8+2/8=11 9/8= 12 1/8

1) 3/7+14/19+4/7+5/19 = 7/7 + 19/19 = 1+1=2;2) 7/16+11/42+9/16+17/42 = 16/16 + 28/42 = 1 + 2/3 = 1 2/3;3) 5/18+4/81+7/18+5/81 = 12/18+9/81=6/9+1/9=7/9; 4) 9/40+13/50+12/50+11/40 = 20/40+25/50=1/2+1/2=1;5) 3 5/11+1 3/16 + 2 5/16 + 4 6/11 = 7 11/11+3 8/16=8+3 1/2 = 11 1/2;6) 1 17/24+3 1/36+5 4/24+2 8/36=6 21/24+5 9/36=6 7/8+5 1/4=11 7/8+2/8=11 9/8=12 1/8