l = p - 5 cm
2(p + l) = k
2(p + p - 5) = 75 cm
2(2p - 5) = 75 cm
4p - 10 = 75 cm
4p = 75 + 10 cm
4p = 85 cm
p = 21,25 cm
→ l = p - 5 cm
→ l = 21,25 - 5 cm
→ l = 16,25 cm
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l = p - 5 cm
2(p + l) = k
2(p + p - 5) = 75 cm
2(2p - 5) = 75 cm
4p - 10 = 75 cm
4p = 75 + 10 cm
4p = 85 cm
p = 21,25 cm
→ l = p - 5 cm
→ l = 21,25 - 5 cm
→ l = 16,25 cm