Question

Rezolvați ecuațiile:
1) 4∙(2x – 1) – 3 = 2∙(x – 1) + x
2) 3∙(x – 2) + 4 = 2∙(3x + 1) – x
3) 3∙(5x – 1) – 7 = 8∙(3x + 2) – 17
4) 6∙(x + 3) – 1 = 5∙(2x + 1) – 8x
5) 3∙(x + 3) + 2 = 5∙(2x + 9) – 6
6) 4∙(2x + 11) – 3 = 5∙(x + 4) + 6
7) 12∙(x – 1) + 3 = 7∙(3x – 3) + 3
8) 14∙(x + 2) – 5 = 3∙(2x + 3) + 6
9) 4∙(5x – 3) – 8 = 3∙(x + 7) – 7
10) 16∙(2x – 1) – 3 = 12∙(3x – 2) + 1
11) 4∙(x + 1) – 3 = 3∙(x – 1) + 7
12) 5∙(4x + 3) + 7 = 3∙(x + 2) – 1

Answer 1

1) 8x-4-3=2x-2+x
8x-7=3x-2 | -3x
5x-7=-2| +7
5x=5 | :5
x=1

2) 3x-6+4=6x+2-x
3x-2=5x+2 | -3x
-2=2x+2| -2
2x=-4 |:2
x=-2

3) 15x-3-7=24x+16–17
15x-10=24x-1 |-15x
9x-1=-10|+1
9x=-9 |:9
x=-1

4) 6x+18-1=10x+5-8x
6x+17=2x+5 |-2x
4x+17=5 |-17
4x=-12 |:4
x=-3

5) 3x+9+2=10x+45-6
3x+11=10x+39 |-3x
7x+39=11 |-39
7x= -28|:7
x=-4

6) 8x+44-3=5x+20+6
8x+41=5x+26 |-5x
3x+41=26 |-41
3x= -15 |:3
x= -5

7) 12x-12+3=21x-21+3
12x-9=21x-18 | -12x
9x-18=-9 | +18
9x=-9 |:9
x=-1

8) 14x+28-5=6x+9+6
14x+23=6x+15 | -6x
8x+23=15 | -23
8x=8 |:8
x = 1

9) 20x - 12 -8=3x+21-7
20x-20=3x+14 | -3x
17x-20=14 |+20
17x=34 |:17
x=2

10) 32x-16-3=36x-24+1
32x-19=36x-23 | -32x
-19=4x-23 |+23
4x=4|:4
x=1

11) 4x+4-3=3x-3+7
4x+1=3x+4 |-3x
x+1=4 |-1
x=3

12) 20x+15+7=3x+6-1
20x+22=3x+5 |-3x
17x+22=5 |-22
17x=-17 |:17
x=-1

Answer 2

Răspuns:

am atasat poza cu rezolvarile