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kitteng
@kitteng
July 2022
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Выбрав удобный порядок вычислений, найдите значения выражений:
3 5/12 - 1,4 - 5 2/3 - 5/6 - 2,6 + 2 1/4;
( - 4/15 + 1,18 - 5/7) + 1 3/14 + ( -1,68 + 2 4/15)
P. S. 3 5/12 и аналогичные числа это смешаные дроби
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Answers & Comments
kasatik09
Первый пример
1) 3 5/12-5 2/3-5/6+2 1/4=41/12-68/12-10/12+27/12=-10/12=-5/6
2) -1,4-2,6=-4
3)-5/6-4=-4 5/6
второй пример
1) -4/15+2 4/15=2
2) -5/7+1 3/14= -10/14+17/14=7/14=1/2=0,5
3)1,18-1,68=-0,5
4) 2+0,5-0,5=2
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Answers & Comments
1) 3 5/12-5 2/3-5/6+2 1/4=41/12-68/12-10/12+27/12=-10/12=-5/6
2) -1,4-2,6=-4
3)-5/6-4=-4 5/6
второй пример
1) -4/15+2 4/15=2
2) -5/7+1 3/14= -10/14+17/14=7/14=1/2=0,5
3)1,18-1,68=-0,5
4) 2+0,5-0,5=2