Question

W załączniku;)

Answer 1

Zadanie 1.

a)

I

x = 8-2y

 

II

x = -3y-4

 

III

x-3y = 4

x = 3y+4

 

IV

x+3y = 9

x = -3y+9

 

b)

I

2y = 8-x |:2

y = 4-1/2x

 

II

3y = -x-4 |:3

y = -1/3x - 4/3

 

III

-12y = -4x+16 |:(-12)

y = 1/3x+4/3

 

IV

9y = -3x+27 |:9

y = -1/3x+3

 

Zadanie 2.

a)

I

2x = -3y /:2

x = -3/2y

 

II

x+8y = 32

x = -8y+32

 

III

2y+3x = 14

3x = 6y /:3

x = 2y

 

IV

x-4y = -6

x = 4y-6

 

b)

I

3y = 2x |:3

y = 2/3x

 

II

x+8y = 32

8y = -x+32 |:8

y = -1/8x+4