$-28-15 = $  

$-3+(-7) = $  

$D = 5+10\times(-7) =$

$19-20 = $  

$E = (1-6)\times(1-10) =$

$4\times(-2,1) = $

$11,3-(-8,1) = $  

$P = 10-7\times(-2) =$

$K = 4\times(-7)- 5 \times (-7) =$

$(-4)\times 43 = $

$(-3)\times(-10) = $

$-22-(-23) = $  

$-14+1 = $  

$(-4)\times(-0,5) = $

$-11,9+13,5 = $  

$6\times(-4) = $

$P = 8-8\times 5 + 9 =$

$-15,9-(-7,7) = $  

$K = 11\times(-7)- 7 \times (-10) =$

$-13,7+(-15,2) = $