Odpowiedź:
1)
a)
- 8 + x = 27
x = 27 + 8
x = 35
b)
16 - x = 5
- x = 5 - 16
- x = - 11 / (- 1)
x = 11
c)
x - 37 =14
x = 14 + 37
x = 51
d)
6 * x = 15
6x = 15 /: 6
x = 5/2
x = 2 1/2
2)
I. 6 * x + 50 = 2
6x = 2 - 50
6x = - 48 / : 6
x = - 8
II. (x + 2) / 5 - 3 = - 1 / * 5
x + 2 - 15 = - 5
x = - 5 - 2 + 15
x = 8
IV. 42 - 3 * x = 2 * x + 2
42 - 3x = 2x + 2
- 3x - 2x = 2 - 42
- 5x = - 40 / :(- 5)
x = 8
Szczegółowe wyjaśnienie:
