Ответ:
1,4- 1 1/2×(1 2/5+1/5)
1,4-1 1/2×1 3/5
1,4-12/5
1 4/10- 12/5
1 2/5-12/5
7/5-12/5=-1
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Ответ:
1,4- 1 1/2×(1 2/5+1/5)
1,4-1 1/2×1 3/5
1,4-12/5
1 4/10- 12/5
1 2/5-12/5
7/5-12/5=-1