Trang chủ » Hỏi đáp » Môn Toán 13/-10- -14/25 9/-12+7/24 9/13-7/-10 7/-4- -9/-12 25/-12+32/-8 08/01/2024 13/-10- -14/25 9/-12+7/24 9/13-7/-10 7/-4- -9/-12 25/-12+32/-8
13/-10 – (-14)/25 = (-13)/10 – (-14)/25 = (-1, 3) – (-0, 56) = – 0,74 ———- 9/-12 + 7/24 = (-3)/4 + 7/24 = (-18)/24 + 7/24 = ((-18) + 7/24 = (-11)/24 ———- 9/13 – 7/-10 = 9/13 + 7/10 = 90/130 + 91/130 = (90+91)/130 = 181/130 ———- 7/-4 – (-9)/-12 = (-7)/4 – 9/12 = (-21)/12 – 9/12 = ((-21) – 9)/12 = – 30/12 = – 5/2 ——— 25/-12 + 32/-8 = (-50)/24 + (-96)/24 = ((-50) + (-96))/24 = – 146/24 = – 73/12 $\boxed{\color{green}{\text{#????????????????????}}}$ Trả lời
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