1) AESOLVA AS OPCRACOIMS A) 5,3+8,53+7 c) (2)/(3)+(5)/(2)-(1)/(4) B) 8,53-6,39 H) (-(5)/(3)) cdot(+(4)/(5)) c) 4,36 times 5 1) (-(4)/(6)) cdot(-(2)/(3)) 0 / 23,7 times 2,4 J) (-(5)/(2)):(+(4)/(3)) +35,4: 4 f) 47,5: 75

Vamos resolver as operações:<br /><br />A) \( 5,3 + 8,53 + 7 = 20,83 \)<br /><br />B) \( 8,53 - 6,39 = 2,14 \)<br /><br />C) \( \frac{2}{3} + \frac{5}{2 \frac{1}{4} = \frac{8}{12} + \frac{30}{12} - \frac{3}{12} = \frac{35}{12} = 2,92 \)<br /><br />H) \( \left(-\frac{5}{3}\right) \cdot \left(+\frac{4}{5}\right) = -\frac{20}{15} = -\frac{4}{3} = -1,33 \)<br /><br />c) \( 4,36 \times 5 = 21,8 \)<br /><br />1) \( \left(-\frac{4}{6}\right) \cdot \left(-\frac{2}{3}\right) = \frac{8}{18} = \frac{4}{9} = 0,44 \)<br /><br />\( 0 / 23,7 \times 2,4 = 0 \)<br /><br />J) \( \left(-\frac{5}{2}\right) \div \left(+\frac{4}{3}\right) = -\frac{15}{8} = -1,875 \)<br /><br />\( +35,4 \div 4 = 8,85 \)<br /><br />f) \( 47,5 \div 75 = 0,63 \)