Bài làm
Bài 1
\(1\frac{1}{2}=\frac{3}{2}=1,5\)
\(2\frac{3}{5}=\frac{13}{5}=2,6\)
\(3\frac{1}{4}=\frac{13}{4}=3,25\)
\(4\frac{7}{25}=\frac{107}{25}=4,28\)
Bài 2
\(\text{X x 1,2 - 3,45 = 4,68}\)
\(\text{ X x 1,2 = 4,68 + 3,45}\)
\(\text{ X x 1,2 = 8,13}\)
\(\text{X = 8,13 : 1,2}\)
\(\text{X = 6,775}\)
Vậy \(\text{X = 6,775}\)
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