Question

quanto é -1,4 + (-5/3) ?

Answer 1

$-1,4+\left(-\dfrac{5}{3}\right)\\\\-\dfrac{14}{10}+\left(-\dfrac{5}{3}\right)\\\\-\dfrac{14}{10}-\dfrac{5}{3}\\\\-\dfrac{3\cdot 14}{3\cdot 10}-\dfrac{10\cdot 5}{10\cdot 3}\\\\-\dfrac{42}{30}-\dfrac{50}{30}\\\\\dfrac{-42-50}{30}\\\\-\dfrac{92}{30}\\\\-\dfrac{92\div 2}{30\div 2}\\\\\boxed{\bold{-\frac{46}{15}}}$