Câu hỏi của Mai Hang

Question

tinh giá tri cua biểu thuc

(12/32+5/-20-10/24):2/3

Bùi MInh · Accepted Answer

$\left(\frac{12}{32}+\frac{5}{-20}-\frac{10}{24}\right):\frac{2}{3}$

$=\left(\frac{3}{8}+\frac{-1}{4}-\frac{5}{12}\right).\frac{3}{2}$

$=\left(\frac{9}{24}-\frac{6}{24}-\frac{10}{24}\right).\frac{3}{2}$

$=\frac{-7}{24}.\frac{3}{2}=\frac{-21}{48}=\frac{-7}{16}$

Câu trả lời:

$\left(\frac{12}{32}+\frac{5}{-20}-\frac{10}{24}\right):\frac{2}{3}$

$=\left(\frac{3}{8}+\frac{-1}{4}-\frac{5}{12}\right).\frac{3}{2}$

$=\left(\frac{9}{24}-\frac{6}{24}-\frac{10}{24}\right).\frac{3}{2}$

$=\frac{-7}{24}.\frac{3}{2}=\frac{-21}{48}=\frac{-7}{16}$