Question

-3/7 nhân 2/5 cộng 2/5 nhân (-5/14) trừ 18/35

m.n giúp e vs ạ

 

Answer 1

=2/5(-3/7-5/14)-18/35

=2/5x(-11/14)-18/35

=-22/70-18/35=-29/35

Answer 2

-3/7 . 2/5 + 2/5 . (-5/14) - 18/35

= 2/5 . [ -3/7 + (-5/14) ] - 18/35

= 2/5 . [ -6/14 + (-5/14) ] - 18/35

= 2/5 . -11/14 - 18/35

= -11/35 - 18/35

= -29/35.

Answer 3

\(\dfrac{-3}{7}\cdot\dfrac{2}{5}+\dfrac{2}{5}\cdot\dfrac{-5}{14}-\dfrac{18}{35}=\dfrac{2}{5}\cdot\left(\dfrac{-3}{7}+\dfrac{-5}{14}\right)-\dfrac{18}{35}=\dfrac{2}{5}\cdot\left(-\dfrac{11}{15}\right)-\dfrac{18}{35}=\left(-\dfrac{11}{35}\right)-\dfrac{18}{35}=-\dfrac{29}{35}\)

Answer 4

+234345554= x =545y

Answer 5

`-3/7 . 2/5 + 2/5 . (-5/14) - 18/35`

= 2/5 . [ -3/7 + (-5/14) ] - 18/35

`= 2/5 . [ -6/14 + (-5/14) ] - 18/35`

`= 2/5 . -11/14 - 18/35`

`= -11/35 - 18/35`

`= -29/35.`