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

$H = 5-3\times 8 + 7 =$

$C = \dfrac{-30+70}{5} =$

$20\times(-5) = $

$10-(-16) = $  

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

$ \dfrac{-42}{-3} = $

$R = (3-7)\times(1-8) =$

$-10-27 = $  

$F = 3\times(-10)- 7 \times (-10) =$