rozwiąż przykłady:
a)7¾-2₇²=
b)10₉²-8⅚=
c)13₇⁴-7₉⁶=
d)8⅔ ÷ 2⅚=
e)12½ × 3,4=
f)7₈³ ÷ 2¾=
g)1⅚×4₁₁³=
h)8₅²×2₇⁶=
i)10⅔÷4₉⁵=
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a)7¾-2₇²=7 ²¹/₂₈ - 2 ⁸/₂₈ = 5 ¹³/₂₈
b)10₉²-8⅚=10 ⁴/₁₈ -8 ¹⁵/₁₈= 9 ²²/₁₈ - 8 ¹⁵/₁₈= 1⁷/₁₈
c)13₇⁴-7₉⁶=13 ³⁶/₆₃ -7 ⁴²/₆₃= 12 ⁹⁹/₆₃-7⁴²/₆₃=5 ⁵⁷/₆₃
d)8⅔ ÷ 2⅚=²⁶/₃ : ¹⁷/₆ = ²⁶/₃ * ⁶/₁₇= ⁵²/₁₇=3 ¹/₁₇
e)12½ × 3,4= ²⁵/₂ * 3 ⅖ = ²⁵/₂ * ¹⁷/₅=⁸⁵/₂=42½
f)7₈³ ÷ 2¾=⁵⁹/₈ : ¹¹/₄=⁵⁹/₈ : ⁴/₁₁= ⁵⁹/₂₂=2 ¹⁵/₂₂
g)1⅚×4₁₁³= ¹¹/₆ * ⁴⁷/₁₁*=⁴⁷/₆=7⁵/₄₆
h)8₅²×2₇⁶=⁴²/₅ * ²²/₇ = ¹³²/₅=26 ⅖
i)10⅔÷4₉⁵=³²/₃ : ⁴¹/₉ = ³²/₃ * ⁹/₄₁=⁹⁶/₄₁=2¹⁴/₄₁