Odpowiedź:
x = 1,2 = 1 ⅕.
Szczegółowe wyjaśnienie:
Obw = 20
x + 4 + x + 4 + 2x + x + 6 = 20
5x + 14 = 20
5x = 20 - 14
5x = 6. /:5
x = 1,2
Spr :
L = 1,2 + 4 + 1,2 + 4 + 2* 1,2 + 1,2 + 6 = 20
P = 20
L = P
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Odpowiedź:
x = 1,2 = 1 ⅕.
Szczegółowe wyjaśnienie:
Obw = 20
x + 4 + x + 4 + 2x + x + 6 = 20
5x + 14 = 20
5x = 20 - 14
5x = 6. /:5
x = 1,2
Spr :
L = 1,2 + 4 + 1,2 + 4 + 2* 1,2 + 1,2 + 6 = 20
P = 20
L = P