упр.9153)4)заранее спасибо!. Created by milabaizakova. matematika-ru

упр.9153)4)заранее спасибо!...

forum99999 -8,5 + (-6) < 1,7 + (-6)
- 14,5 < - 4,3
-------------------------------
- 8,5 +10 <1,7 + 10
1,5 < 11,7
---------------------------------
- 8,5 + 2,8< 1,7 + 2,8
- 5,7 < 4,5
---------------------------------
-8,5 + (-9,9) < 1,7 + (-9,9)
- 18,4 < - 8,2
==========================================
- 9 1/12 < 20
- 9 1/12- (-7) < 20 - (-7)
-9 1/12 + 7 < 20 + 7
- 2 1/12 < 27
----------------------------------
-9 1/12 - 19 < 20 - 16
- 28 1/12 < 4
---------------------------------
-9 1/12 - 4 1/6 < 20 - 4 1/6
- 13 3/12 < 15 5/6
---------------------------------
-9 1/12 -(-3 2/3) < 20 - (-3 2/3)
-9 1/12 + 3 2/3 < 20 + 3 2/3
- 73/12 + 44/3 < 23 2/3
-29/12 < 23 2/3
- 2 5/12 < 23 2/3

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3)
-9 1/12 - 4 1/6<20 - 4 1/6
т.к. 1/6=2/12
-13 3/12<15 5/6
-13 1/4<15 5/6
4) -9 1/12 - (-3 2/3)<20- (-3 2/3)
   т.к. 2/3=8/12
   -9 1/12 +3 8/12<20+3 2/3
   -109/12+44/12<23 2/3
-65/12<23 2/3
-5 5/12<23 2/3

0 votes Thanks 1

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