2,45 + 1,5 - 3/4 =...
[tex]2.45 + 1.5 - \frac{3}{4} \\ \\ = \frac{245}{100} + \frac{15}{10} - \frac{3}{4} \\ \\ = \frac{49}{20} + \frac{3}{2} - \frac{3}{4} \\ \\ = \frac{49 + 30 - 15}{20} \\ \\ = \frac{64}{20} = 3 \frac{4}{20} = 3 \frac{1}{5} [/tex]
=2, 45+1,5-3/4
=3, 95-(3/4×25=75/100=0, 75)
=3, 2
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