Question

4/5 . -3/7 +4/5 .-2/7

Answer 1

4,5 nhân [3,7-2,7]

=4,7 nhân 1=4,7

Answer 2

mình nhầm nha 4,5

Answer 3

4,5

Answer 4

= 4/5 x (-3/7 + -2/7)

= 4/5 x -5/7

= -20/35 = -4/7

Answer 5

\(\dfrac{4}{5}\)(\(\dfrac{-3}{7}\)+\(\dfrac{-2}{7}\))= \(\dfrac{4}{5}\).\(\dfrac{-5}{7}\)= \(\dfrac{-20}{35}\)=\(\dfrac{-4}{7}\)

Answer 6

\(\dfrac{4}{5}.\dfrac{-3}{7}+\dfrac{4}{5}.\dfrac{-2}{7}\)

\(\dfrac{4}{5}.\left(\dfrac{-3}{7}+\dfrac{-2}{7}\right)\)

\(=\dfrac{4}{5}.\left(-\dfrac{5}{7}\right)\)

\(=\dfrac{-4}{7}\)