Obicz:
2
----- + 0,6 = ..........
3
._____________________________
4,2 + 1 1
------
9
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3,6 - 1 1
------
2
Plis pomocy ;)daje naj
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2/3 +0,6= 2/3 + 3/5= 10/15 + 9/15 = 19/15= 1 4/15
4,2+ 1 1/9 = 4 1/5 + 10/9 = 21/5 + 10/9 = 84/45 + 50/45 = 134/45 = 2 44/45
3,6 - 1 1/2 = 3 3/5 - 3/2 = 18/5 - 3/2 = 36/10 - 15/10 = 21/10 = 2 1/10
Pozdrawiam :)
a)2/3+0,6 = 2/3+6/10 = 20/30+18/30 = 38/30 = 1 8/30 = 1 4/15
b)4,2+ 1 1/9 =4 2/10+ 1 1/9=4 1/5+10/9=21/5+10/9=84/45+ 50/45=134/45 = 2 44/45
c)3,6 - 1 1/2 = 3,6 -1,5 = 2,1
Można też to zrobić tak:
3,6-1 1/2 = 3 6/10-1 5/10 = 2 1/10
Myślę, że pomogłam.