Sagot :
Cevap:
B) 1
Adım adım açıklama:
sondaki boşluğa x dersek
resmin kısa kenarı 15 +x
uzun kenar 31 + x olur
2(15+x) = 31 + x olur
30 +2x = 31 + x
x = 1 olur
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