Răspuns:
1:
a)-8-4×2
-8-8=-16
b)11-42:3
11-14=-3
c)-284:(-4)+(-60)
71-60=11
d)-1600:(-8):25:(-4)
200:25:(-4)
8:(-4)
-2
e) -8+7-9-23
-1-32
-33
2:
x=-320
a) -320+24 =-296
b) -320:4= -80
3. x/9=5/3 => x=(9×5):3
x= 45:3
x = 15
4. 20/100 × x = -16
simplificam dractia 20/100 = 2/10
2/10×x=-16
2x/10=-16
2x=10×(-16)
2x= -160
x=-80
5. |x+36|=18
x+36= -18, +18
1. x+36= -18
x=-18-36
x=-54
2. x+36=18
x=18-36
x= -18
