Question

1)3x5+=8
2)10x-19=21
3)2x-7= -10
4)0,5+2,6=5,1
5)5x-27= -4x
6)9x+5 = 4x
7)60+13x=3x
8)4x- 12=x
9)5x+21= 10x -19
10)11x+17=10x+13
11)3+1,6x=0,1x
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Answer 1

1) 3x+5 = 8
3x = 8 - 5
3x = 3
x = 3/3
x = 1

2) 10x - 19 = 21
10x = 21 + 19
10x = 40
x = 40/10
x = 4

3) 2x - 7 = -10
2x = -10 + 7
2x = -3
x = -3/2
x = -1,5

4) Incompleta

5) 5x - 27 = -4x
5x + 4x = 27
9x = 27
x = 27/9
x = 3

6) 9x + 5 = 4x
9x - 4x = -5
5x = -5
x = -5/5
x = -1

7) 60 + 13x = 3x
13x - 3x = -60
10x = -60
x = -60/10
x = -6

8) 4x - 12 = x
4x - x = 12
3x = 12
x = 12/3
x = 4

9) 5x + 21 = 10x - 19
21 + 19 = 10x - 5x
40 = 5x
x = 40/5 = 8

10) 11x + 17 = 10x + 13
11x - 10x = 13 - 17
x = -4

11) 3 + 1,6x = 0,1x
1,6x - 0,1x = -3
1,5x = -3
x = -3/1,5 = -2