Odpowiedź :
A)
15 * - 15 = 7x - 14
- 225 = 7x - 14
-7x = - 14 - 225
-7x = - 239
x = 34,1
B)
4 * x + 7 = 11 * x - 14
4x + 7 = 11x - 14
4x - 11x = 14 - 7
7x = 7
x = 1
A)
15 * - 15 = 7x - 14
- 225 = 7x - 14
-7x = - 14 - 225
-7x = - 239
x = 34,1
B)
4 * x + 7 = 11 * x - 14
4x + 7 = 11x - 14
4x - 11x = 14 - 7
7x = 7
x = 1