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
