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ксюша20037
@ксюша20037
September 2021
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вычислите : а)1 1/5* 2 5/6 б)-4/9*2 1/4 в)9/20*(-3 4/9) г)-1 5/16*(-3 3/7)
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bychek49
А) 1 1/5× 2 5/6= 6/5×17/6 =17/5=3,4
б) - 4/9× 2 1/4 = - 4/9 × 9/4 =0
в) 9/20× (- 3 4/9) = 9/20 ×-31/9 = -31/20 = -1.55
г) -1 5/16 × (- 3 3/7) = - 21/16× - 24/7 = 72/16 = 4.5
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Answers & Comments
б) - 4/9× 2 1/4 = - 4/9 × 9/4 =0
в) 9/20× (- 3 4/9) = 9/20 ×-31/9 = -31/20 = -1.55
г) -1 5/16 × (- 3 3/7) = - 21/16× - 24/7 = 72/16 = 4.5