Oblicz bez uzycia kalkulatora.
1.17 3/4 + 5 5/6=
2. 1,5 + 2,16=
3. 3 5/6 -1 1/2=
4. - 2 1/3 + 1 3/4=
5. 1 1/8 * (-1 4/6)=
6. (-1 5/15):(-16/25)=
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1.17 3/4+5 5/6= 17 9/12+5 10/12=23 19/12=24 7/12
2.1,5+2,16=3,66
3.3 5/6-1 1/2= 3 5/6-1 3/6=2 2/6= 2 1/3
4.-2 1/3+1 3/4= - 2 4/12+1 9/12=-7/12
5.1 1/8*(-1 4/6)=9/8*(-10/6)=-15/8=-1 7/8
6.(-1 5/15):(-16/25)=(-20/15)*(-25/16)=25/12=2 1/12
1. 17¾+5⅚=17⁹/₁₂+5¹⁰/₁₂=22¹⁹/₁₂=23⁷/₁₂
2. 1,5+2,16=1⁵/₁₀+2¹⁶/₁₀₀=1⁵⁰/₁₀₀+2¹⁶/₁₀₀=3⁶⁶/₁₀₀
3. 3⅚-1½=²³/₆-³/₂=²³/₆-⁹/₆=¹⁴/₆=2²/₆=2⅓
4. -2⅓+1¾=-⁷/₃+⁷/₄=-²⁸/₁₂+²¹/₁₂=-⁷/₁₂
5. 1⅛·(-1⁴/₆)=⁹/₈·(-¹⁰/₆)=¾·(-⁵/₂)=-¹⁵/₈=-1⅞
6. (-1⁵/₁₅):(-¹⁶/₂₅)=(-²⁰/₁₅)·(-²⁵/₁₆)=²⁵/₁₂=2¹/₁₂