Question

Rezolvati in R ecuatia
3(x-1)=5x+2

3(2x+7)=9

2(x+1)=3(x-1)

Answer 1

3(x-1)=5x+2

3x-3=5x+2

3x-5x-3=2

-2x=2+3

-2x=5

x=-5/2

3(2x+7)=9

2x+7=3

2x=3-7

2x=-4

x=-2

2(x+1)=3(x-1)

2x+2=3(x-1)

2x+2=3x-3

2x-3x+2=-3

2x-3x=-3-2

-x=-3-2

-x=5

x=5,

Answer 2

Răspuns:

Explicație pas cu pas:

3(x-1) = 5x+2

3x-3=5x+2

3x-5x = 2+3

-2x=5

x = - 5/2

x = -2,5

___________

3(2x+7)=9

6x+21=9

6x =9-21

6x = -12

x = -12/6

x = - 2

_____________

2(x+1) = 3(x-1)

2x + 2 = 3 x - 3

2 x - 3 x = - 3 - 2

- x = - 5

x = 5