bài 3 thực hiện phép tính
a\(\dfrac{5}{8}+\dfrac{3}{17}+\dfrac{4}{18}+\dfrac{20}{-17}+\dfrac{-2}{9}+\dfrac{21}{56}\)
b\(\left(\dfrac{9}{16}+\dfrac{8}{-27}\right)+\left(1+\dfrac{7}{16}+\dfrac{-19}{27}\right)\)
c\(\left(\dfrac{13}{5}+\dfrac{7}{16}\right)+\left(\dfrac{-15}{16}+\dfrac{6}{15}\right)\) d \(\left(6-2\dfrac{4}{5}\right).3\dfrac{1}{8}-1\dfrac{3}{5}:\dfrac{1}{4}\)
27(13-16)-16(13-27)
27[13-16]-16.[13-27
27 . ( 13 - 16 ) - 16 . ( 13 - 27 )
tính
a,27.[13-16]-16[13-27]
TÍNH NHANH
27.(16-13)-16.(27-13)
27(13-16)-16(13-27)
27.( 13 - 16) - 16 .( 13 - 27)
giai chi tiet dum mink nha
\(27\left(13-16\right)-16\left(13-27\right)\)