Question

(7,5x(-3.5)-2.5x3,5)x1,9:(-17,5) 

Làm chi tiết nha

Answer 1

\(\dfrac{\left[7.5\cdot\left(-3.5\right)-2.5\cdot3.5\right]\cdot1.9}{-17.5}\)

\(=\dfrac{-3.5\left(7.5+2.5\right)\cdot1.9}{-17.5}\)

\(=\dfrac{35\cdot1.9}{17.5}=2\cdot1.9=3.8\)