Question

1- 2x +3 = 17
2- 4x = 28
3- 4x -3 = 1/2
4- x + 5 = 0
5- x + 4 = -3
6- 3x = 1 = 12
7- -7x - 1= -15
8- - 4x - 3 = 11

Answer 1

1.
2x + 3 = 17
2x = 17 - 3
2x = 14
x = 14/2
x = 7
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2.
4x = 28
x = 28/4
x = 7
-------------------------------------
3.
4x -3 = 1/2
4x = 1 + 3
        2

mmc = 2

2.4x = 1 + 2.3
   6          6

8x = 1 + 6
8x = 7
x = 7
      8
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4.
x + 5 = 0
x = - 5
-----------------------------------------
5.
x + 4 = -3 
x = - 3 - 4
x = - 7
-----------------------------------------
6.
3x + 1 = 12
3x = 12 - 1
3x = 11
x = 11/3
-----------------------------------
7.

- 7x - 1= -15
- 1 + 15 = 7x
14 = 7x
7x = 14
x = 14/7
x = 2
------------------------------------------------
8.
- 4x - 3 = 11
- 3 - 11 = 4x
- 14 = 4x
4x = - 14
x = - 14 (:2) = - 7
         4 (:2)       2

Answer 2

1 - 2x + 3 = 17 ... -2x = 13 -> x = -13/2 ... x = -6,52- 4x = 28 ... -4x = 26 ... x = -13/2 ... x = -6,5

3- 4x -3 = 1/2 (x2) ... 6 - 8x - 6 = 1 ... x = -1/8 ... x = -0,125

4- x + 5 = 0 ... -x = -9 ... x = 9

5- x + 4 = -3 ... 5 - x = -7 ... -x = -12 ... x = 12

6- 3x - 1 = 12 ... -3x = 7 ... x = -7/3 ... x = -2,33333333.....

7- -7x - 1= -15 ... 7 + 7x - 1= -15 ... 7x = -21 ... x = -3

8- - 4x - 3 = 11 ... 8 + 4x - 3 = 11 ... 4x = 6 ... x = 6/4 ... x = 1,5