\(4\dfrac{3}{8}+5\dfrac{2}{3}=\dfrac{35}{8}+\dfrac{17}{3}=\dfrac{241}{24}\)
\(2\dfrac{3}{8}+1\dfrac{1}{4}+3\dfrac{6}{7}=\dfrac{19}{8}+\dfrac{5}{4}+\dfrac{27}{7}=\dfrac{419}{56}\)
\(2\dfrac{3}{8}-1\dfrac{1}{4}+5\dfrac{1}{3}=\dfrac{19}{8}-\dfrac{5}{4}+\dfrac{16}{3}=\dfrac{155}{24}\)
Đúng 3
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a: =4+5+3/8+2/3
=9+9/24+16/24
=9+25/24=10+1/24=241/24
b: =2+3/8+1+1/4+3+6/7
=6+3/8+2/8+6/7
=6+5/8+6/7
=53/8+6/7
=419/56
c: =2+3/8-1-1/4+5+1/3
=6+11/24=155/24
Đúng 2
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