Question

me ajudem por favor ​

Answer 1

$c) \: 0,037 \cdot \frac{5}{2} = \\ \\ \frac{37}{1000} \cdot \frac{5}{2} = \\ \\ \frac{37\cdot5}{1000\cdot2} = \\ \\ \frac{ {185}^{\color{red} { \div 5}} }{ {2000}^{\color{red} { \div 5}} } = \\ \\ \bf{ \frac{37}{400} } \\ \\ d) \: \frac{5}{6} + 2,3 = \\ \\ \frac{5}{6} + \frac{23}{10} = \\ \\ \frac{25 + 69}{30} = \\ \\ \frac{ {94}^{\color{red} { \div 2}} }{ {30}^{\color{red} { \div 2}} } = \\ \\ \bf{ \frac{47}{15} }$

Espero ter ajudado! :)