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a, => 8,96 : x =2,8
=> x = 8,96 / 2,8
=> x = 3,2
b, -12*x = 0,54 - 0,06
-12*x = 0,48
x = 0,48/ (-12)
x = -0,04
\(\frac{31}{4}=7\frac{3}{4}\)
\(\frac{25}{3}=8\frac{1}{3}\)
\(\frac{36}{5}=7\frac{1}{5}\)
\(\frac{78}{21}=3\frac{5}{7}\)
\(\frac{65}{23}=2\frac{19}{23}\)
\(\left(a\right)3\frac{2}{4}=3x4+2=\frac{14}{4}\)
\(\left(b\right)5\frac{3}{2}=5x3+2=\frac{17}{2}\)
Bài 1:
5,9 ; 82,45 ; 810,225
Bài 2:
1/10 ; 2/100 ; 4/1000 ; 95/1000
dễ mà bạn
bài 1
5,9;82,45;810,225
bai 2
0,1=1/10 0,02=2/100 0,004=4/1000 0,095=95/1000
\(3\frac{2}{5}=\frac{3\cdot5+2}{5}=\frac{17}{5}\)
\(2\frac{1}{7}=\frac{2\cdot7+1}{7}=\frac{15}{7}\)
\(8\frac{1}{6}=\frac{8\cdot6+1}{6}=\frac{49}{6}\)
\(2\frac{1}{2}=\frac{2\cdot2+1}{2}=\frac{5}{2}\)
\(3\frac{2}{5}\cdot2\frac{1}{7}=\frac{17}{5}\cdot\frac{15}{7}=\frac{51}{7}\)
\(8\frac{1}{6}:2\frac{1}{2}=\frac{49}{6}:\frac{5}{2}=\frac{49}{6}\cdot\frac{2}{5}=\frac{49}{15}\)
\(2\frac{3}{5}=\frac{2x5+3}{5}=\frac{10+3}{5}=\frac{13}{5}\)
\(5\frac{4}{9}=\frac{5x9+4}{9}=\frac{45+4}{9}=\frac{49}{9}\)
\(9\frac{3}{8}=\frac{9x8+3}{8}=\frac{72+3}{8}=\frac{75}{8}\)
\(12\frac{7}{10}=\frac{12x10+7}{10}=\frac{120+7}{10}=\frac{127}{10}\)
\(2\frac{3}{5}=\frac{13}{5}\)
\(5\frac{4}{9}=\frac{49}{9}\)
\(9\frac{3}{8}=\frac{75}{8}\)
\(12\frac{7}{10}=\frac{127}{10}\)
\(3\frac{7}{10}=\frac{37}{10}=3.7\)
\(5\frac{63}{100}=\frac{563}{100}=5.63\)
\(12\frac{378}{1000}=\frac{6189}{500}=12.378\)
\(3\frac{7}{10}=\frac{37}{10}\)
\(5\frac{63}{1000}=\frac{5063}{1000}\)
\(12\frac{378}{1000}=\frac{6189}{500}\)
5\(\frac{3}{5}\)= \(\frac{28}{5}\)
4\(\frac{2}{3}\)= \(\frac{14}{3}\)
6\(\frac{6}{7}\)= \(\frac{48}{7}\)
\(5\frac{3}{5}=5.6\) \(4\frac{2}{3}=4\left(6\right)\) \(6\frac{5}{7}=6\left(714285\right)\)
\(2\frac{1}{3}=\frac{7}{3};4\frac{2}{5}=\frac{22}{5};3\frac{1}{4}=\frac{13}{4};9\frac{5}{7}=\frac{68}{7};10\frac{3}{10}=\frac{103}{10}\)
8,96 : X =2,03 -0,5
8,96 :X = 1,53
X = 8,96 -1,53
X = 7,43
1,2 .X = 0,54 - 0,06
1,2 .X = 0,48
X = 1,2 : 0,48
X = 2,5
\(\frac{17}{5}\)= 2\(\frac{7}{5}\); \(\frac{139}{12}\)= 10\(\frac{19}{12}\); \(\frac{150}{13}\)= 11\(\frac{7}{13}\)
NHỚ TK CHO MÌNH NHÉ
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