Odpowiedź:
x + 5 = 2(x + 1)
x + 5 = 2x + 2
x - 2x = 2 - 5
-x = - 3 /*(-1)
x= 3
spr.
L= x + 5 = 3 + 5 = 8
P= 2(x + 1) = 2(3 + 1) = 2* 4= 8
8=8
L= P
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Odpowiedź:
x + 5 = 2(x + 1)
x + 5 = 2x + 2
x - 2x = 2 - 5
-x = - 3 /*(-1)
x= 3
spr.
x + 5 = 2(x + 1)
L= x + 5 = 3 + 5 = 8
P= 2(x + 1) = 2(3 + 1) = 2* 4= 8
8=8
L= P
Szczegółowe wyjaśnienie: