rezolvati asta repede. trebuie sa o dau in 15 minute. Repedee
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Explicație pas cu pas:
1. {a}, {b}, {c}, {a, b}, {a, c}, {b, c}, {a, b, c}
2. 14, 21, 28
3. x/2=y/3=k
=> x=2k
y=3k
y-x=12
3k-2k=12
k=12 => x=24
y=36
4. x+118⁰=180⁰
=> x=62⁰