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Calculați a) (-2/9+3 1/18)×18 b) (-3/25 + 1 1/3) ×7, 5 f) (2 1/2 - 3 2/3) ×2 1/7 - 1 1/2 g) ( 2 2/15×3 1/8-9) ×(-9/14)
Ajutațima va rog urgent! dau coroană!​