Question

13/10.15/7 trừ 8/7.4/3+2(dấu chấm trong biểu thức là dấu nhân nhé)

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Answer 1

\(\frac{13}{10}\times\frac{15}{7}-\frac{8}{7}\times\frac{4}{3}+2=\frac{39}{14}-\frac{32}{21}+2=\frac{137}{42}\)

Answer 2

\(\frac{13}{10}.\frac{15}{7}-\frac{8}{7}.\frac{4}{3}+2\)

\(=\frac{39}{14}-\frac{32}{21}+2\)

\(=\frac{117}{42}-\frac{64}{42}+\frac{84}{42}\)

\(=\frac{117-64+84}{42}\)

\(=\frac{137}{42}\)

Answer 3

cảm ơn nhé