Question

Oblicz proszę <3
1/2 -x=5
1 1/2 -x=2 1/2
-3=x - 2 1/2
2x= 1 3/4
8x= 1 1/7
3 1/2x= 4
2 1/2x= 5
6 1/2 x= 15
3/4x= 2/5
2/7x= 8/9
3/10x= 11/15
1/2x= -3/7
1/3x= -4/5
4/5x= -6/7
2/3x= 3 1/4
3/4x= 8 1/5
2/7x= -2 1/3
4/5x= - 3 1/6
- 2/5x= - 6 1/2
7/10x= - 1 1/10

Answer 1

1/2 -x=5
1/2 = x + 5
x = 1/2 - 5
x = -4 1/2

1 1/2 -x=2 1/2
-x = 2 1/2 - 1 1/2
-x = 1
x = -1

-3=x - 2 1/2
x = -3 + 2 1/2
x = -1/2

2x= 1 3/4
2x = 7/4   I:2
x = 7/8

8x= 1 1/7
8x = 8/7   I : 8
x = 1/7

3 1/2x= 4
7/2x = 4
obie strony mnozymy przez 2/7
x = 4 * 2/7
x = 8/7 = 1 1/7

2 1/2x= 5
5/2x = 5
obie strony mnozymy przez 2/5
x = 2

6 1/2 x= 15
13/2 x = 15
x = 15 * 2/13 
x = 30/13 = 2 4/13

3/4x= 2/5   I * 4/3
x = 2/5 * 4/3
x = 8/15
 
2/7x= 8/9  I * 7/2
x = 4/9 * 7 = 28/9 = 3 1/9

3/10x= 11/15  I * 10/3
x = 110/45 = 2 20/45

1/2x= -3/7    I * 2
x = -6/7

1/3x= -4/5   I * 3
x = -12/5 = -2 2/5

4/5x= -6/7  I * 5/4
x = -3/7 * 5/2 = -15/14

2/3x= 3 1/4
2/3x = 13/4   I * 3/2
x = 13/4 * 3/2 
x = 39/8 = 4 7/8

3/4x= 8 1/5
3/4x = 41/5   I * 4/3
x = 41/5 * 4/3
x = 164/15
x = 10 14/15

2/7x= -2 1/3
2/7x = -7/3    I * 7/2
x = -7/3 * 7/2
x = -49/6 = -8 1/6
 
4/5x= - 3 1/6
4/5x = -19/6   I * 5/4
x = -19/6 * 5/4
x = -95/24
x = -3 23/24

- 2/5x= - 6 1/2
-2/5x = -13/2   I * (-5/2)
x = 65/4 
x = 16 1/4

7/10x= - 1 1/10
7/10x = -11/10   I * 10/7
x = -11/7 = -1 4/7