Решите уравнение

а) 4•25•х=800

б) у•5•20=500

в) 21•8•р=168

г) м•3•33=990

А) 4•25•х=800

25*x=800/4

25*x=200

x=200/25

x=8

4*25*8=800

800=800

б) у•5•20=500

y*5=500/20

y*5=25

y=25/5

y=5

5*5*20=500

500=500

в) 21•8•р=168

8*p=168/21

8*p=8

p=8/8

p=1

21*8*1=168

168=168

г) м•3•33=990

m*3=990/33

m*3=30

m=30/3

m=10

3*10*33=990

990=990

1) 4 * 25 * x = 800

100 * x = 800

x = 800 : 100

x = 8

2) y * 5 * 20 = 500

y * 100 = 500

y = 500 : 100

y = 5

3) 21 * 8 * p = 168

8 * p = 168 : 21

8 * p = 8

p = 8 : 8

p = 1

4) m * 3 * 33 = 990

m * 33 = 990 : 3

m * 33 = 330

m = 330 : 33

m = 10