Найти х, если:

3/8*х+25=100

1/9*х-20=56

7/15*х-503/4=491/4

40-3/8*х=351/2

(24/5*х-50) : 2/3=51

(41/2-2*х) * 32/3=11/15

1). 3/8*х+25=100

3/8*х=100-25

3/8*х=75

x=75*8/3

x=200

2). 1/9*х-20=56

1/9*х=56+20

1/9*х=76

x=76*9

x=684

3). 7/15*х-503/4=491/4

7/15*х=503/4+491/4

7/15*х=497/2

x=497/2*15/7

x=1065/2

4). 40-3/8*х=351/2

3/8*х=40-351/2

3/8*х=-271/2

x=-271/2*8/3

x=-1084/3

5). (24/5*х-50) : 2/3=51

(24/5*х-50) = 51*2/3

(24/5*х-50) = 34

24/5*х=84

x=35/2

6). (41/2-2*х) * 32/3=11/15

(41/2-2*х) = 11/15*3/32

(41/2-2*х) = 11/160

2x=41/2-11/160

2x=3269/160

x=3269/320

x=10 69/320