3 примера 25 баллов ​

Question

3 примера 25 баллов ​

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Answer 1

• 2(13/30)- (1 (1/10) +1/5)

2(13/30)- (11/10 +1/5)

2(13/30)- (11/10 +2/10)

2(13/30)- 13/10

73/30- 13/10

73/30 -39/30=34/30=17/15=1 (2/15)

• 2(8/15)-( 1(3/10)+2/5)

2(8/15)-( 13/10+2/5)

2(8/15)-( 13/10+4/10)

2(8/15)-17/10

38/15-17/10

76/30-51/30=25/30=5/6

• 4 (14/45)-1 (7/15)-3/5

194/45-66/45-27/45=101/45