Zadanie 5
a) 3 * x + 5 = 17 /-5
3 * x + 5 - 5 = 17 - 5
3x = 12 /:3
3x/3 = 12/3
x = 4
Sprawdzenie:
L = 3 * 4 + 5 = 12 + 5 = 17
P = 17
L = P
b) 2 * x - 3 = 23 /+3
2 * x - 3 + 3 = 23 + 3
2x = 26 /:2
2x/2 = 26/2
x = 13
Sprawdzenie:
L = 2 * 13 - 3 = 26 - 3 = 23
P = 23
L = P
