Question

o resultado da expressão 3,2+1,8 -2,3 , na forma fracionária​

Answer 1

$3,2 = 3 + 0.2 = 3 +\frac{1}{5}  = \frac{16}{5} \\\\1,8 = 1 + 0,8 = 1 + \frac{4}{5}  = \frac{9}{5} \\\\-2,3 = -2 - 0,3 = -2 - \frac{3}{10}  = -\frac{23}{10} \\\\\frac{16}{5} + \frac{9}{5} - \frac{23}{10} \\\\\\frac{32}{10} + \frac{18}{10}   - \frac{23}{10}\\\\\frac{32 + 18 - 23}{10} \\\\\frac{27}{10}$