решите прошу -2/5-(-3/5)=; -2/5-(-3/5)=;-3/7-(+4/7)=;5/8-(-7/8)=;-1/9-(+2/9)=.. Created by пони60. matematika-ru

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решите прошу -2/5-(-3/5)=; -2/5-(-3/5)=;-3/7-(+4/7)=;5/8-(-7/8)=;-1/9-(+2/9)=.

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ias85 -2/5-(-3/5)=-2/5+3/5=1/5

-2/5-(-3/5)=-2/5+3/5=1/5

-3/7-(+4/7)=-3/7-4/7=-7/7=-1

5/8-(-7/8)=5/8+7/8=12/8=3/2=1 1/2

-1/9-(+2/9)=.-1/9-2/9=-3/9=-1/3

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