Question

1) 5+2*(-0,3)+0,3-1,2*(-1/2)

Answer 1

$5 + 2 times ( - 0.3) + 0.3 - 1.2 times ( - frac{1}{2} ) = \ \ 5 - 0.6 + 0.3 - frac{6}{5} times ( - frac{1}{2}) = \ \ 4.7 + frac{3}{5} = \ \ frac{47}{10} + frac{3}{5} = \ \ frac{53}{10} = 5 frac{3}{10} = 5.3$