75/100+18/21+19/32+1/4+3/21+13/32=3 NHA BN
\(=\frac{3}{4}+\frac{18}{21}+\frac{1}{4}+\frac{19}{32}+\frac{3}{21}+\frac{13}{32}\)
\(=\left(\frac{3}{4}+\frac{1}{4}\right)+\left(\frac{18}{21}+\frac{3}{21}\right)+\left(\frac{19}{32}+\frac{3}{32}\right)\)
\(=1+1+1=3\)
75/100 + 18/21 + 19/32 + 1/4 + 3/21 + 13/32
= (75/100 + 1/4) + (18/21 + 3/21) + (19/32 + 13/32)
= 1 + 1 + 1
= 3
\(\frac{75}{100}+\frac{18}{21}+\frac{19}{32}+\frac{1}{4}+\frac{3}{21}+\frac{13}{32}\)
\(=\frac{3}{4}+\frac{18}{21}+\frac{1}{4}+\frac{19}{32}+\frac{3}{21}+\frac{13}{32}\)
\(=\left(\frac{3}{4}+\frac{1}{4}\right)+\left(\frac{18}{21}+\frac{3}{21}\right)+\left(\frac{19}{32}+\frac{3}{32}\right)\)
\(=1+1+1\)
\(=3\)
tính chu vi của hình tam giác có các cạnh là 24cm 63cm , 28cm