x ning qiymatini toping? (x + 12) + (2x + 18) = 90
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20
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21
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23
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25
📝 Detailed explanation
Tenglamani soddalashtirib yechamiz: x + 12 + 2x + 18 = 90 ⇒ 3x + 30 = 90 ⇒ 3x = 60 ⇒ x = 20.
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