pomóżcie . ; C a)1 i 5/9 : 1 i 1/3 * 0.75 b)3 i 1/3 -1/3 *0,6 c) 3 i 4/9 - 1 i 2/3 *1,8 d)4,5 * 5 i 5/9 + 6,4 * 3/8 Jak coś to 5/9 itp to są ułamki . POTRZEBNE MI TO NA DZIŚ TAK DO 21.30
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a)
1 5/9 : 1 1/3 x 0,75= 14/9 : 4/3 x 3/4= 14/9 x 3/4 x 3/4 = 14/16= 3/4
b)
3 1/3 - 1/3 x 0,6 = 3 1/3 - 1/3 x 6/10 = 3 1/3 - 6/30= 3 10/30 - 6/30= 3 4/30= 3 2/25
c)
3 4/9 - 1 2/3 x 1,8 = 3 4/9 - 5/3 x 18/10= 3 4/9 - 3= 4/9
d)
4,5 x 5 5/9 + 6,4 x 3,8 = 45/10 x 50/9 + 64/10 x 38/10 = 25 + 608/25= 25 + 24 8/25=
= 49 8/25