А)1 2/3- b=5/6 c+1 1/3=3 1/3+x=1 1/6 0,8-b=7/15 x : 0,2=1 1/3 a : 2/3=3/4 б) 1 1/4 - b = 1/2 b * 5/7=1 7/12 +a=1 1/6 y-5/6=1/3 1 1/2 *a =6 7/8+ a= 1 1/4 c) y* 2/7=3/14 1 5/6 -y=2/3 c-0,6= 1/3 y*3/5 = 1/15 6/7: с= 3/14 х-7/10=7/10 b) 1 3/4 : x = 7 1 2/3 : y =5

А)5/3-b=5/6
-b=5/3-5/6
b=-5/6

с+4/3=3
с=3-4/3
с=5/3=1 2/3

1/3+х=7/6
х=7/6-1/3
х=5/6

-b=0,8-7/15
b=1/3

х:0,2=4/3
х=4/3*2/10
х=4/15

а=3/4*2/3
а=1/2

б)
-b=5/4-1/2
b=-3/4

b=1:5/7
b=7/5=1 2/5

а=7/12-7/6
а=-7/12

у=1/3+5/6
у=7/6=1 1/6

а=6:3/2
а=4

а=5/4-7/8
а=3/8

с)
у=3/14:2/7
у=3/4

-у=11/6-2/3
у=-7/6=-1 1/6

с=1/3+6/10
с=14/15

у=1/15:3/5
у=1/9

с=6/7:3/14
с=4

х=7/10+7/10
х=14/10=1 2/5

х=7/4:7
х=1/4

у=5/3:5
у=1/3