$(-10)\times 4 = $

$F = \dfrac{-6+26}{4} =$

$D = 8\times(-9)- 3 \times (-6) =$

$S = 13-10\div 5 + 8 =$

$\dfrac{0,4}{-2} = $

$(-49)\times(-3) = $

$K = 16+7\times(-8) =$

$2-(-26) = $  

$R = 5+44\div(1-5) =$

$-9-15 = $