4×⅝ + ¾÷1¼ - (2,5×3+4,5)×⁴/₉
prosze nie o sam wynik ale po kolei co i jak. I ma wyjść wynik -2⁷/₃₀.
4×⅝ + ¾÷1¼ - (2,5×3+4,5)×⁴/₉ =
= 20/8 + 3/4 * 4/5 - (7,5 + 4,5) * 4/9 =
= 5/2 + 3/5 - 12* 4/9 =
=25/10 + 6/10 - 16/3 =
=31/10 - 16/3 =
= 93/30 - 160/30 =
= -67/30 =
= -2 7/30
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4×⅝ + ¾÷1¼ - (2,5×3+4,5)×⁴/₉ =
= 20/8 + 3/4 * 4/5 - (7,5 + 4,5) * 4/9 =
= 5/2 + 3/5 - 12* 4/9 =
=25/10 + 6/10 - 16/3 =
=31/10 - 16/3 =
= 93/30 - 160/30 =
= -67/30 =
= -2 7/30