Решите уравнение!

1) 2 1/3 : (х - 1 1/6) = 1 5/9

2) 27: (31 3/7 - 2 11/14 х) = 1 1/8

3) 48: (3 4/5 х - 25) = 1 1/2

1) 2 1/3 : (х - 1 1/6) = 1 5/9

7/3=14/9 * (x-7/6)

14/9x-49/27=7/3

14/9x=7/3+49/27

14/9x=63/27+49/27

14/9x=112/27

112/27:14/9=112/27*9/14=

112/42=56/21=2 14/21=2 2/3

X=2 2/3

2) 27: (31 3/7 - 2 11/14 х) = 1 1/8

27=9/8 * (220/7-39/14x)

9/8*220/7=9/2*55/7=495/14

9/8*39/14=351/112

495/14-351/112 x=27

-351/112x=27-495/14

-351/112x=378/14-495/14

-351/112x=-117/14

X = 117/14:351/112

X=117/14*112/351=56/21=

2 14/21=2 2/3

3) 48: (3 4/5 х - 25) = 1 1/2

48=3/2 (19/5x-25)

3/2*19/5x=57/10x

3/2 * (-25) = - 75/2 = - 37 1/2

57/10x-37 1/2=48

57/10x=48+37 1/2

57/10x=85 1/2

X = 171/2:57/10

X=171/2*10/57

X=15