Question

tính hợp lý nếu có thể

/ 65,9 - 137,45 / + / 115,9 - 37,45 /

Answer 1

\(\left|65,9-137,45\right|+\left|115,9-37,45\right|\)

\(=-65,9+137,45+115,9-37,45\)

\(=\left(-65,9+115,9\right)+\left(137,45-37,45\right)\)

\(=50+100=150\)

Chúc bạn học tốt!!!

Answer 2

\(\left|65,9-137,45\right|+\left|115,9-37,45\right|\)

\(-65,9+137,45+115,9-37,45\)

\(=\left(-65,9+115,9\right)+\left(137,45-37,45\right)\)

\(=50+100\)

\(=150\)