Question

Am nevoie de 3 4 si 5 dau coroana

Answer 1

Răspuns:

3 x=-6 4. X=-19 5. X=2

Explicație pas cu pas:

3. 5(2x-3)-4(x-9)=3(x-8)+27

10x-15-(4x-36)=3x-24+27

10x-15-4x+36=3x+3

6x+21=3x+3

6x-3x=3-21

3x=-18 (impartim la 3)

x= - 6

4. 6(4x-9)-7(2x-3)=5(3x+8)+22

24x-54-(14x-21)=15x+40+22

24x-54-14x+21=15x+62

10x-33=15x+62

- 33-62=15x-10x

-95=5x (impartim la 5

- 19=x

X= - 19

5. 2(4x-3)-3(x+7)=3(x+2)-29

8x-6-(3x+21)=3x+6-29

8x-6-3x-21=3x-23

5x-27=3x-23

5x-3x=-23+27

2x=4

x=2