Question

Aflați pe x.
4(3x+1)-76=12
37-2(x+3)=21
[32-(x-3).5=21
2(3x-7)=94
5(x-1)=4
[(X-2).3+5]=13
2x-3<9
3(x-4)<5
113-x<110
5x+1<10
4(x-2)>12

Answer 1

4(3x+1)-76=12
12x+4-76=12
12x=12+72
12x=84
x=7

37-2(x+3)=21
37-2x-6=21
31-21=2x
2x=10
x=5

[32-(x-3)*5]=21
32-5x-15=21
17-5x=21
-5x=21-17
-5x=5
x= -1

2(3x-7)=94
6x-14=94
6x=94+14
6x=108
x=18

5(x-1)=4
5x-5=4
5x=9
x=1,8

[(X-2).3+5]=13
3x-6+5=13
3x=13+1
3x=14
x=4,(6)

2x-3<9
2x<12
x<6

3(x-4)<5
3x-12< 5
3x< 12+5
3x< 17
x<5,(6)

113-x<110
113-110 <x
x > 3

5x+1<10
5x < 9
x < 1,8
 
4(x-2)>12
4x-8 > 12
4x > 12+8
4x> 20
x> 5