\(\frac{-7}{9}.\frac{3}{11}+\frac{-7}{9}.\frac{8}{11}+\frac{17}{9}\)
\(=\frac{-7}{9}.\left(\frac{3}{11}+\frac{8}{11}\right)+\frac{17}{9}\)
\(=\frac{-7}{9}.1+\frac{17}{9}\)
\(=\frac{-7}{9}+\frac{17}{9}\)
\(=\frac{10}{9}\)
~Học tốt~
Tính nhanh
a)-2/5.4/7+-3/5.2/7+-3/5
b)5/9.14/17+1/17.5/9+2/9.5/17
c)8/19.5/11+7/9.8/11-8/19.1/17
làm hẳn phép tính
-7/9.3/11+7/-9.8/11- -16/9
tính
a, 7/-25 + -18/25 + 4/23 +5/7+19/23
b, 7/19 x 8 /11 + 7/19 x 3/11 + 12/19
c ,day la hon so nha: 8 2/7 -(3 4/7 + 4 2/7 )
d, -7/9 .3/11 + -7 /9.8/11 + 1 7/9
5/9 × 8/17+ 3/17 : 9/7 - 5/9 7/3 × 6/ 11 + 7 / 11 - 5 /13 + 6/ 13
a) -5/11 + ( -6/11 + 1 )
b) -13/17 + ( 13/-21 + -4/17 )
c) -5/12 . 7/-17 . 9/-20
d) 13/17 . 4/-5 + 13/17 . -3/4
e) -5/7 . 2/11 + -5/7 . 9/11 + 5/7
f) -2/5 . (-6) + 3/4 . 4/-10
5/9 × 8/17+ 3/17 : 9/7 - 5/9 7/3 × 6/ 11 + 7 / 11 - 5 /13 + 6/ 13 -7/25÷ (-14/39)÷ 50 /78 Giúp tui với tui đang cần gấp
a) -5/12 . 7/-17 . 9/-20
b) 13/17 . 4/-5 + 13/17 . -3/4
c)-5/7 . 2/11 + -5/7 . 9/11 + 5/7
d)-2/5 . (-6) + 3/4 . 4/-10
Tính nhanh
a) 4.11.3/4.9/121
b) 3/4.7/9+1/4.7/9
c) -6/7+2/11+12/17+9/11+-1/7
