$R = 4+64\div(1-9) =$

$E = \dfrac{-16}{11-3} =$

$ \dfrac{-48}{-3} = $

$2,2\times(-3) = $

$(-1,4)\times 3 = $

$-7-24 = $  

$M = 13-28\div 4 + 3 =$

$K = 23+3\times(-3) =$

$28-(-2) = $  

$D = 7\times(-9)- 6 \times (-7) =$