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8. Scrie in mai multe moduri un intreg ca suma a trei tractii cu numitorul :
a) 8 b) 9 c)7 d)6
Repede ! Dau coroana !


Răspuns :

a) 2/8+3/8+3/8 = 8/8
1/8+4/8+3/8 = 8/8
5/8+2/8+1/8 = 8/8
b) 1/9+4/9+4/9 = 9/9
3/9+5/9+1/9= 9/9
6/9+1/9+2/9 = 9/9
c) 1/7+3/7+3/7 = 7/7
4/7+2/7+1/7 = 7/7
5/7+1/7+1/7 = 7/7
d) 1/6+4/6+1/6 = 6/6
3/6+2/6+1/6 = 6/6
2/6+2/6+2/6 = 6/6