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75/100+18/21+19/32+1/4+3/21+13/32=3 ban nhe!
ung ho nhe!
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75/100+18/21+1/4+19/32+3/21+13/32=3/4+18/21+1/4+19/32+3/21+13/32
=(3/4+1/4) + (18/21+3/21) + (19/32+13/32)
= 1 + 1 + 1
= 3
tik cho mik nha
75/100+18/21+1/4+19/32+3/21+13/32=3/4+18/21+1/4+19/32+3/21+13/32
=(3/4+1/4) + (18/21+3/21) + (19/32+13/32)
= 1 + 1 + 1
= 3
tick nha ^^
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\(=\frac{3}{4}+\frac{6}{7}+\frac{19}{32}+\frac{1}{4}+\frac{1}{7}+\frac{13}{32}\)
\(=\left(\frac{3}{4}+\frac{1}{4}\right)+\left(\frac{6}{7}+\frac{1}{7}\right)+\left(\frac{19}{32}+\frac{13}{32}\right)=1+1+1=3\)
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ta có: \(A=\frac{75}{100}+\frac{78}{21}+\frac{19}{32}+\frac{22}{21}+\frac{13}{32}\)
\(A=\frac{3}{4}+\left(\frac{78}{21}+\frac{22}{21}\right)+\left(\frac{19}{32}+\frac{13}{32}\right)\)
\(A=\frac{3}{4}+4+\frac{16}{21}+1\)
\(A=5+\frac{3}{4}+\frac{16}{21}\)
\(B=\left(27,5\times0,1+2,5\times0,1\right)\times2\)
\(B=\left[\left(27,5+2,5\right)\times0,1\right]\times2\)
\(B=\left(30\times0,1\right)\times2\)
\(B=5\)
\(\Rightarrow5+\frac{3}{4}+\frac{16}{21}>5\)
\(\Rightarrow A>B\)
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a )
75/100 + 18/21 + 19/32 + 1/4 + 3/21 + 13/32
= 3/4 + 18/21 + 19/321 + 1/4 + 3/21 + 13/32
= ( 3/4 + 1/4 ) + ( 18/21 + 3/21 ) + ( 19/32 + 13/32 )
= 1 + 1 + 1
= 3
b )
4 và 2/5 + 5 và 6/9 + 2 và 3/4 + 1/4 + 1/3 + 3/5
= 22/5 + 51/9 + 11/4 + 1/4 + 1/3 + 3/5
= ( 22/5 + 3/5 ) + ( 51/9 + 1/3 ) + ( 11/4 + 1/4 )
= 25/5 + 54/9 + 12/4
= 5 + 6 + 3
= 14
a)\(\frac{75}{100}+\frac{18}{21}+\frac{19}{32}+\frac{1}{4}+\frac{3}{21}+\frac{13}{32}=\frac{3}{4}+\frac{18}{21}+\frac{1}{4}+\frac{19}{32}+\frac{3}{21}+\frac{13}{32}\)
\(=\left(\frac{3}{4}+\frac{1}{4}\right)+\left(\frac{18}{21}+\frac{3}{21}\right)+\left(\frac{19}{32}+\frac{13}{32}\right)\)
\(=1+1+1=3\)
\(\dfrac{2}{32}+\dfrac{32}{21}=\dfrac{42}{672}+\dfrac{1024}{672}=\dfrac{1066}{672}=\dfrac{533}{336}\)
2/32 + 32/21 =533/336