Question

Rezolvați:
X+4=-5
2×-11=5
4×-12=×+6
-5(×-3)+7=2
|×|=5
|×+7|=9

Answer 1

Răspuns:

x+4=-5

x=-5-4=-9

2x-11=5

2x=5+11

2x=16

x=8

4x-12=x+6

4x-x=6+12

3x=18

x=6

-5x+15+7=2

22-2=5x

20=5x

x=4

x=5

x=-5

x+7=9

x=9-7=2

x+7=-9

x=-9-7

x=-16

Explicație pas cu pas:

Answer 2

x + 4 = - 5

x = - 5 - 4

x = - 9

2x - 11 = 5

2x = 5 + 11

2x = 16

x = 8

4x - 12 = x + 6

4x - x = 6 + 12

3x = 18

x = 6

- 5(x - 3) + 7 = 2

- 5x + 15 + 7 = 2

15 + 7 - 2 = 5x

5x = 20

x = 4

| x | = 5

x = ± 5

| x + 7 | = 9

x + 7 = 9

x = 9 - 7

x = 2

x + 7 = - 9

x = - 9 - 7

x = -16