Oblicz.
6/5 + 7/15 +2/3=
11/4 - 2/3 + 2 5/6=
7 10/35 + 5 4/7 - 3 2/5=
1 13/25 + 17/25 - 1 4/5=
To jest zadanie z ćwiczenia matematyka wokół nas na stronie 72
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18/15 + 7/15 + 10/15 = 35/15 = 2 1/3
33/12 - 8/12 + 2 10/12 = 25/12 + 2 10/12 = 2 35/12 = 3 11/12
7 10/35 + 5 20/35 - 3 14/35 = 12 30/35 - 3 14/35 = 9 16/35
1 13/25 + 17/25 - 1 20/25 = 1 30/25 - 1 20/25 = 10/25 = 2/5
To są te same przykłady tylko sprowadzone do wspólnego mianownika .
6/5 + 7/15 +2/3=
18/15 + 7/15 + 10/15 =
35/15 = 1 i 5/15 = 1 i 1/3
11/4 - 2/3 + 2 5/6=
2 i 3/4 - 2/3 + 2 i 5/6 =
2 i 9/12 - 8/12 + 2 i 10/12 =
2 i 1/12 + 2 i 10/12 =
4 i 11/12
7 10/35 + 5 4/7 - 3 2/5=
7 i 10/35 + 5 i 20/35 - 3 i 14/35=
12 i 30/35 - 3 i 14/35 =
9 i 16/35
1 13/25 + 17/25 - 1 4/5=
1 i 30/25 - 1 i 20/25 =
10/25= 2/5