Номер 1 (X - 4.1)*5=2.5*(X+8) Номер 2 (3.8-y)*11=5.5*(3.6-y)

Question

Номер 1

(X - 4.1)*5=2.5*(X+8)

Номер 2

(3.8-y)*11=5.5*(3.6-y)

Answer 1

Номер 1

(X - 4.1)*5=2.5*(X+8)

5х-20,5=2,5х+20

5х-2,5х=20+20,5

2,5х=40,5

х=40,5:2,5

х=16,2

 

Номер 2

(3.8-y)*11=5.5*(3.6-y)

41,8-11у=19,8-5,5у

5,5у-11у=19,8-41,8

-5,5у=-22

у=-22:(-5,5)

у=4

Answer 2

5x-20.5=2.5x+20

5x-2.5x=20+20.5

2.5x=40.5

x=40.5:2.5

x=16.2

 

41.8-11y=19.8-5.5y

41.8-19.8=-5.5y+11y

22=5.5y

y=22:5.5

y=4