Question

\(\frac{5}{12}.\left(-\frac{3}{4}\right)-\frac{7}{12}.\frac{3}{4}\)

Tính :

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Answer 1

\(\frac{5}{12}.\left(\frac{-3}{4}\right)-\frac{7}{12}.\frac{3}{4}\)

\(=\left(\frac{-5}{12}-\frac{7}{12}\right).\frac{3}{4}\)

\(=\left(-1\right).\frac{3}{4}=\frac{-3}{4}\)

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Answer 2

\(\frac{5}{12}.\left(-\frac{3}{4}\right)-\frac{7}{12}.\frac{3}{4}\)

\(=\frac{3}{4}.\left(-\frac{5}{12}-\frac{7}{12}\right)\)

\(=\frac{3}{4}.\left(-1\right)\)

\(=-\frac{3}{4}\)

Answer 3

\(\frac{5}{12}\cdot(\frac{-3}{4})-\frac{7}{12}\cdot\frac{3}{4}\)

\(=\frac{5}{12}\cdot\left(-1\right)\cdot\frac{3}{4}+\frac{-7}{12}\cdot\frac{3}{4}\)

\(=\frac{-5}{12}\cdot\frac{3}{4}+\frac{-7}{12}\cdot\frac{3}{4}\)

\(=\frac{3}{4}\cdot-\left(\frac{5}{12}+\frac{7}{12}\right)\)

\(=\frac{3}{4}\cdot\frac{-12}{12}\)

\(=\frac{3}{4}\cdot\left(-1\right)=\frac{-3}{4}\)

Answer 4

\(\frac{5}{12}\cdot\left(\frac{-3}{4}\right)-\frac{7}{12}\cdot\frac{3}{4}=\frac{3}{4}\left(\frac{-5}{12}-\frac{7}{12}\right)=\frac{3}{4}\cdot\frac{-12}{12}=\frac{3}{4}\cdot\left(-1\right)=\frac{-3}{4}\)