Răspuns:
1)-1-2-3-4×(-5)=-1-2-3+20=-6+20=14
2)8×+4=-3×-7
8×-3×=-4-7
5×=-11
[tex]x = \frac{ - 11}{5} [/tex]
7)a+b+c+d+e+f+g+h+i=-27
a=-27:9
a=-3
3)
5x-1 aparține Divizorilor lui -8={1,-1,2,-2,4,-4,8,-8}
5×-1=1
5×=2
×=2/5
5×-1=-1
5×=0
×=-5
5×-1=2
5×=3
×=3/5
5×-1=-2
5×=1
×=1/5
5×-1=4
5×=5
×=1
5×-1=-4
5×=-3
×=-3/5
