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x + 1 5/7 = 4 3/7
x = 4 3/7 - 1 5/7
x = 3 10/7 - 1 5/7 = 2 5/7
spr
L = 2 5/7 - (-1 5/7) = 2 5/7 + 1 5/7 = 3 10/7 = 4 3/7
P = 4 3/7
L = P
Proszę ;)