Răspuns:
1. a) 341:21=16 rest 5
b) 1024:11=93 rest 1
c) 14936:142=15 rest 26
2. 3(x+5)-7=29
3(x+5) = 29 + 7 = 36
x+5= 36:3
x+5 =12
=> x= 12 -5 = 7
b) 4x+5=77-2x
4x+2x=77-5
6x= 72
=> x= 72:6 = 12
c) 1-3(2-x)=x-5
1- 6 - x = x - 5
1 - 6 +5 = x + x
0 = 2x
=> x = 0
3. a) 3x - 4 < 12 + x
3x - x < 12+4
2 x < 16
x < 8
b) 3-2(x-4) > 36
3-2x - 8 > 36
3-2x> 44
-2x > -41
2x>41
2x > 20.5
c) 2x+7 < 1
2x< -6
x< -3
