Question

пжжж помогите буду блогодарен​

Answer 1

$\frac{k}{2d} +\frac{2k}{d} =\frac{k}{2d} +\frac{2k\times2}{d\times2} =\frac{k}{2d}+\frac{4k}{2d} =\frac{k+4k}{2d} =\frac{5k}{2d}$

$\frac{5\times(-106-0,73)}{2\times(15,5-17,5)} =\frac{5\times(-106,73)}{2\times(-2)}=\frac{-533,65}{-4}=133,4125$