Các câu hỏi tương tự
\(\frac{8}{19}\) * \(\frac{5}{11}\) + \(\frac{8}{19}\) * \(\frac{6}{11}\) + \(\frac{11}{19}\)
Tính:
a) \(\dfrac{7}{19}+\dfrac{12}{19}\)
b) \(\dfrac{5}{13}+\dfrac{4}{13}\)
c) \(\dfrac{24}{11}-\dfrac{13}{11}\)
d) \(\dfrac{35}{8}-\dfrac{19}{8}\)
GIÚP MK VỚI HOM NAY MÌNH NÔP RÙI
TRẢ LỜI GIÚP MÌNH NHÉ
a] [2/5 +7/9] +3/5 =
b] 19/11 + [8/13 +3/11]=
c] 12/19 - 19/7=
thank you các bạn
a 19/5 - 11/4 / 9/8
Tính
a) 4/3*7 + 4/7*11 + 4/11*15 + 4/15*19 + 4/19*23 + 4/23*27
b) 1/2*3 + 1/3*4 + 1/4*5 + 1/5*6 +1/6*7
c) 2/3*5 + 2/5*7 + 2/7*9 + 2/9*11 + 2/11*13 + 2/1*2 + 2/2*3 + 2/3*4 + 2/8*9 + 2/9*10
1.Tính:
a.3/2:9/4+21/8 b.3/10+5/2x1/3 c.8/15:3/11+2/15:2/11 d.19/5-11/4:9/8 e.33/7:11/6+37/15x21/74
19/11 + (8/13 + 3/11)
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20=?
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19=?