Ligninger -
30 - x = 5
25
45 + x = 50
5
5 * x = 15
3
2 (5*x) = 20
x=5
90 - x = 35
55
x + 15 = 55
40
7 * x = 35
5
10 = 2 (x - 5)
10
85 - x = 30
55
32 + x = 85
53
25 + 7 * x = 39
2
8 = 2 (x + 3) - 10
6
90 - x = 75
x + 32 = 75
43
20 + 4 * x = 52
8
2 (5x + 3) = x - 30
-4
77 - x = 34
43
x + 65 = 98
33
4 * x - 20 = 20
10
-5x + 42 = 2 (3x - 1)
x= 4