(7дробь 4 19 -2 дробь 8 19 ) + (8- 4 дробь 12 19 ) . Created by 270785. matematika-ru

(7дробь 4 19 -2 дробь 8 19 ) + (8- 4 дробь 12 19 ) ...

Inf777

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(7 4/19 - 2 8/19) + ( 8 - 4 12/19) = 4 15/19 + 3 7/19 = 8 3/19

270785 прости но ты не расписала

270785 по действиям

гюйс

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(7 4/19 - 2 8/19)+(8 - 4 12/19)=8 3/19

1) 7 4/19 - 2 8/19=6 23/19 - 2 8/19=4 15/19
2) 8 - 4 12/19=7 19/19 - 4 12/19=3 7/19
3) 4 15/19 + 3 7/19=7 22/19=8 3/19

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