Question

Tính theo cách hợp lý:

-5/12-3,7-7/12-6,3

Answer 1

=-5/12-7/12-3,7-6,3

=-1-10

=-11

Answer 2

\(-\dfrac{5}{12}-3,7-\dfrac{7}{12}-6,3\)

\(=-\dfrac{5}{12}-\dfrac{37}{10}-\dfrac{7}{12}-\dfrac{63}{10}\)

\(=\left(-\dfrac{5}{12}-\dfrac{7}{12}\right)-\left(\dfrac{37}{10}+\dfrac{63}{10}\right)\)

\(=-\dfrac{12}{12}-\dfrac{100}{10}\)

\(=-1-10\)

\(=-11\)