1+9+2+8+3+74+6+5=?????????
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TA
2
7 tháng 7 2021
\(4\frac{5}{7}:1=\frac{33}{7}:1==\frac{33}{7}\)
\(\frac{5}{6}+2=\frac{5}{6}+\frac{12}{6}=\frac{17}{6}\)
\(\frac{7}{15}x\frac{21}{74}=\frac{7}{3x5}x\frac{3x7}{74}=\frac{7x7}{5x74}=\frac{49}{370}\)
MN
6
PT
15 tháng 9 2018
1+2+3+4+5+6+7+8+9+1+2+3+4+5+6+7+8+9+1+2+3+4+5+6+7+8+9+1028=(1+2+3+4+5+6+7+8+9)x3+1028=45x3+1028=135+1028=1163
MG
2 tháng 5 2018
1+2+3+4+5+6+7+8+9
=(1+9)+(2+8)+(3+7)+(4+6)+5
=10+10+10+10+5
=10×4+5
=40+5
=45
Học tốt
2 tháng 5 2018
= (1+9) + (2+8) + ( 3+7 ) + (4+6) + 5
= 10+10+10+10+5
= 10*4+5
=40+5
=45
VK
1
4 tháng 3 2017
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DN
1
26 tháng 1 2022
1: =7/2+23/5=35/10+46/10=81/10
2: =6/8+53/8=59/8
3: =43/8+65/7=821/56
DN
1
4 tháng 2 2018
\(A=\frac{3469-54}{6938-108}\)
\(=\frac{3415}{6830}\)
\(=\frac{3415}{6830}=\frac{3415:3415}{6830:3415}=\frac{1}{2}=\frac{3}{6}\)
\(B=\frac{2468-89}{3720-147}\)
\(=\frac{2370}{3555}\)
\(=\frac{2370}{3555}=\frac{2370:1185}{3555:1185}=\frac{2}{3}=\frac{4}{6}\)
HD
0
TM
2
26 tháng 8 2016
\(\frac{-1}{39}+\frac{-1}{52}=\frac{-7}{156}\)
\(\frac{-6}{9}+\frac{12}{16}=\frac{-2}{3}+\frac{3}{4}=\frac{1}{12}\)
\(\frac{-2}{5}-\frac{-3}{11}-\frac{34}{37}-\frac{74}{-85}=\frac{-1215}{6919}\)
\(\frac{-5}{9}:\frac{-7}{18}=\frac{-5}{9}.\frac{-18}{7}=\frac{10}{7}\)
108 nha bạn
1+9+2+8+3+74+6+5=108