Найдите расстояние между точками а) А(-4/7) и В(-5/21) б) M(3 4/5) и N (-4 3/15). Created by video2014. matematika-ru

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CarrotJuice А) АВ = -4/7 + (-5/21) = -(5/21 + 4/7)= - (5/21 + 12/21) = - 17/21
б) MN = 3 4/5 + (-4 3/15) = - (4 3/15 - 3 4/5) = - (4 3/15 - 3 12/15) = -(3 18/15 - 3 12/15) = -3 6/15

6 votes Thanks 3

lixa4ka А) 4/7-5/21=12/21+5/21=7/21=1/3
б) 3 4/5+4 3/15= 3 12/15+4 3/15= 7 15/15= 8

3 votes Thanks 3

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