Question

rozwiąz metoda przeciwnych współczynników

3x +4y =2

8y=4-6x

Answer 1

3x +4y =2

8y=4-6x

 

x= (2-4y)/3

8y=4-6x

 

x= (2-4y)/3

8y=4-6(2-4y)/3

 

x= (2-4y)/3

8y=4- 4- 16y

 

x= (2-4y)/3

24y=0

 

x= (2-4y)/3

y=0

 

x=2/3

y=0

Answer 2

3x +4y =2 8y=4-6x 3x + 4y = 2 / * -2 -6x + 8y = 4 -6x - 8y = -4 -6x + 8y = 4 -12x = 0 / : (-12) x = 0 ______________________________ x= 0 3x +4y =2 x=0 3*0 + 4y = 2 x=0 4y = 2 /: 4 x=0 y= 0,5