Hisoblang: ((70 − 42) + (7 + 15) / 2) / 2
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19
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18,5
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19,5
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20
📝 Detailed explanation
Amallarni bajaramiz: 1) 70 − 42 = 28; 2) (7 + 15) / 2 = 11; 3) Surat: 28 + 11 = 39; 4) Natija: 39 / 2 = 19,5.
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