Question

\(a,\frac{11}{24}-\frac{5}{41}+\frac{13}{24}+0,5-\frac{36}{21}\)

\(b,-12:\cdot\left(\frac{3}{4}-\frac{5}{6}\right)^2\)

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Answer 1

\(a,\frac{11}{24}-\frac{5}{41}+\frac{13}{24}+0.5-\frac{36}{21}\)

\(=\frac{11}{24}+\frac{13}{24}-\frac{5}{41}+\frac{1}{2}-\frac{36}{21}\)

\(=\frac{24}{24}-\frac{5}{41}+\frac{1}{2}-\frac{12}{7}\)

Số hơi to??

\(b,-12:\left(\frac{3}{4}-\frac{5}{6}\right)^2\)

\(=-12:\left(\frac{9}{12}-\frac{10}{12}\right)^2\)

\(=-12:\left(-\frac{1}{12}\right)^2\)

\(=-12\cdot144\)

\(=-1728\)

Answer 2

\(a)=\left(\frac{11}{24}+\frac{13}{24}\right)-\left(\frac{5}{41}+\frac{36}{41}\right)+\frac{1}{2}\)

\(=\frac{24}{24}-\frac{41}{41}+\frac{1}{2}\)

\(=1-1+\frac{1}{2}\)

\(=\frac{1}{2}\)

Answer 3

\(-12:\left(\frac{3}{4}-\frac{5}{6}\right)^2\)

\(=-12:\left(\frac{9}{12}-\frac{10}{12}\right)^2\)

\(=-12:\left(\frac{-1}{12}\right)^2\)

\(=-12:\frac{1}{12^2}\)

\(=-12\cdot12^2\)

\(=-12^3\)

\(=1728\)